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Dutch Slave Coast
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Dutch Slave Coast
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Key Information

The Dutch Slave Coast (Dutch: Slavenkust) refers to the trading posts of the Dutch West India Company on the Slave Coast, which lie in contemporary Ghana, Benin, Togo, and Nigeria. The primary purpose of the trading post was to supply slaves for the Dutch colonies in the Americas. Dutch involvement on the Slave Coast started with the establishment of a trading post in Offra in 1660. Later, trade shifted to Ouidah, where the English and French also had a trading post. Political unrest caused the Dutch to abandon their trading post at Ouidah in 1725, now moving to Jaquim, at which place they built Fort Zeelandia. By 1760, the Dutch had abandoned their last trading post in the region.

The Slave Coast was settled from the Dutch Gold Coast, on which the Dutch were based in Elmina. During its existence, the Slave Coast held a close relationship to that colony.

History

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Prospect of the European factories at the Royal Palace of Savi. Included are the Portuguese, English, French and Dutch factories. The Dutch factory is at the bottom right.

According to various sources, the Dutch West India Company began sending servants regularly to the Ajaland capital of Allada from 1640 onward. The Dutch had in the decades before begun to take an interest in the Atlantic slave trade due to their capture of northern Brazil from the Portuguese. Willem Bosman writes in his Nauwkeurige beschrijving van de Guinese Goud- Tand- en Slavekust (1703) that Allada was also called Grand Ardra, being the larger cousin of Little Ardra, also known as Offra. From 1660 onward, Dutch presence in Allada and especially Offra became more permanent.[1] A report from this year asserts Dutch trading posts, apart from Allada and Offra, in Benin City, Grand-Popo, and Savi.

The Offra trading post soon became the most important Dutch office on the Slave Coast. According to a 1670 report, annually 2,500 to 3,000 slaves were transported from Offra to the Americas and writing of the 1690s, Bosman commented of the trade at Fida, "markets of men are here kept in the same manner as those of beasts are with us."[2] Numbers of slaves declined in times of conflict. From 1688 onward, the struggle between the Aja king of Allada and the peoples on the coastal regions, impeded the supply of slaves. The Dutch West India Company chose the side of the Aja king, causing the Offra office to be destroyed by opposing forces in 1692. After this debacle, Dutch involvement on the Slave Coast came more or less to a halt.[3]

During his second voyage to Benin, David van Nyendael visited the king of Benin in Benin City. His detailed description of this journey was included as an appendix to Willem Bosman's Nauwkeurige beschrijving van de Guinese Goud- Tand- en Slavekust (1703). His description of the kingdom remains valuable as one of the earliest detailed descriptions of Benin.[4]

On the instigation of Governor-General of the Dutch Gold Coast Willem de la Palma, Jacob van den Broucke was sent in 1703 as "opperkommies" (head merchant) to the Dutch trading post at Ouidah, which according to sources was established around 1670. Ouidah was also a slave-trading center for other European slave traders, making this place the likely candidate for the new main trading post on the Slave Coast.[5][6]

Political unrest was also the reason for the Ouidah office to close in 1725. The company this time moved their headquarters to Jaquim, situated more easterly.[5] The head of the post, Hendrik Hertog, had a reputation for being a successful slave trader. In an attempt to extend his trading area, Hertog negotiated with local tribes and mingled in local political struggles. He sided with the wrong party, however, leading to a conflict with Director-General Jan Pranger and to his exile to the island of Appa in 1732. The Dutch trading post on this island was extended as the new centre of slave trade. In 1733, Hertog returned to Jaquim, this time extending the trading post into Fort Zeelandia. The revival of slave trade at Jaquim was only temporary, however, as his superiors at the Dutch West India Company noticed that Hertog's slaves were more expensive than at the Gold Coast. From 1735, Elmina became the preferred spot to trade slaves.[7]

Human toll

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The transatlantic slave trade resulted in a vast and as yet unknown loss of life for African captives both in and outside the Americas. "More than a million people are thought to have died" during their transport to the New World according to a BBC report.[8] More died soon after their arrival. The number of lives lost in the procurement of slaves remains a mystery but may equal or exceed the number who survived to be enslaved.[9]

The savage nature of the trade led to the destruction of individuals and cultures. Historian Ana Lucia Araujo has noted that the process of enslavement did not end with arrival on Western Hemisphere shores; the different paths taken by the individuals and groups who were victims of the Atlantic slave trade were influenced by different factors—including the disembarking region, the ability to be sold on the market, the kind of work performed, gender, age, religion, and language.[10][11]

Patrick Manning estimates that about 12 million slaves entered the Atlantic trade between the 16th and 19th century, but about 1.5 million died on board ship. About 10.5 million slaves arrived in the Americas. Besides the slaves who died on the Middle Passage, more Africans likely died during the slave raids in Africa and forced marches to ports. Manning estimates that 4 million died inside Africa after capture, and many more died young. Manning's estimate covers the 12 million who were originally destined for the Atlantic, as well as the 6 million destined for Asian slave markets and the 8 million destined for African markets.[12] Of the slaves shipped to The Americas, the largest share went to Brazil and the Caribbean.[13]

Trading posts

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Place in West Africa Est. Disest. Comments
Offra (Pla, Cleen Ardra, Klein Ardra, Offra) 1660 1691 As the original head trading post at the Dutch Slave Coast, Offra was established in 1660. According to a 1670 report, 2,500 to 3,000 slaves were transported annually from Offra. Due to the Dutch siding with the Aja in the local political struggles, the fort was destroyed in 1692.[3]
Allada (Ardra, Ardres, Arder, Allada, Harder) 1660 ? According to sources, the Dutch West India Company began sending servants to Allada, the capital of Ajaland, already in 1640. In some sources, Allada is referred to as "Grand Ardra", to contrast it with "Little Ardra", which is another name for Offra.[1]
Benin City 1660 1740 In contemporary Nigeria.
Grand Popo 1660 ?
Savi (Sabee, Xavier, Savy, Savé, Sabi, Xabier) 1660 ? In the beginning of the 18th century, the Dutch had a small trading post in Savi (capital of the Kingdom of Whydah), next to the Royal Palace. Compared to the English and French trading posts, the Dutch post was rather minimalistic in nature.[14]
Ouidah (Fida, Whydah, Juda, Hueda, Whidah) 1670 1725 Ouidah was a center for slave trading on the slave coast. In 1703, Governor-General of the Gold Coast Willem de la Palma sent Jacob van den Broucke as "head merchant" to Ouidah in 1703. Abandoned in 1725, in favour of the post at Jaquim, due to political unrest at the Slave Coast.[5]
Agathon (Aggathon, Agotton) 1717 ? The trading post at Agathon, in contemporary Nigeria, was situated on a hill on the banks of the Benin River (also: Rio Formoso). Agathon was an important post for the trade in clothes, especially the so-called "Benijnse panen". In 1718–1719, the post produced 31,092 pounds of ivory.[15]
Jaquim (Jaquin, Jakri, Godomey, Jakin) 1726 1734 One of the most successful post at the slave coast. Became the head post after Ouidah was abandoned in 1725. In 1733 Fort Zeelandia was built here, but two years later, the directors of the Dutch West India Company decided to shift the slave trade to Elmina Castle, where slaves were cheaper.[7]
Aného (Petit Popo, Little Popo, Klein Popo, Popou) 1731 1760 Little Popo, also known as Aného, was the most westerly post on the Slave Coast. Due to this, the post suffered from competition of the Danish Africa Company, based at the Danish Gold Coast.[16]
Appa 1 1732 1736? The island of Appa lies to the east of Offra. To this island, Hendrik Hertog, the merchant at Jaquim, fled in 1732 when he sided with the defeated party in a local conflict. On this island, a new trading post was founded, which was supposed to replace Jaquim. Appa and rebuilt Jaquim, now known as Fort Zeelandia, became a prominent centre of slave trade for some time, until 1735, when the Dutch West India Company decided to shift slave supply to Elmina on the Gold Coast. Hertog fled to Pattackerie in 1738, fearing that Appa would be attacked by local tribes as well.[17]
Appa 2 (Epe, Ekpe) 1732 1755? Appa 2 is the name used in some literature to refer to the trading post Hendrik Hertog fled to from the island of Appa, east of Offra. He named the new post Appa as well, but this post was situated near Pattackerie (contemporary Badagri).[18]
Badagri (Pattackerie) 1737 1748 Referred to on the Atlas of Mutual Heritage as a separate trading post distinct from "Appa 2", also located at Badagri. It is unsure whether there were two separate trading posts in reality, or that the posts are one and the same.[19]
Meidorp (Meiborg) ? ? Meidorp was situated at the River Benin (also: Rio Formoso). It was a simple lodge, named by Dutch traders. It was abandoned after the last merchant named Beelsnijder turned the local population against him, due to his tactless approach towards them.[20]

Notes

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References

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Dutch Slave Coast

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The Dutch Slave Coast designated the segment of West Africa's coastline, spanning parts of present-day eastern , , , and western , where the established trading posts and forts to procure slaves for transatlantic shipment during the 17th and 18th centuries. Operated under the WIC's monopoly from its founding in 1621 until the mid-18th century, these outposts, including facilities at and other sites, enabled the Dutch to export roughly 500,000 to 600,000 slaves from , representing about 5 to 6 percent of the overall volume. Initially supporting Dutch sugar plantations in after the WIC's 1630 conquest there, the trade pivoted to colonies like and following the loss of in 1654, with slaves often redistributed to Spanish, English, and French territories via as an . Dutch dominance in slaving from this region peaked in the early to mid-17th century amid rivalry with , English, and French traders, but declined thereafter due to WIC financial strains, the end of its slave trade monopoly around 1730, and intensifying competition, culminating in withdrawal by the early under British abolitionist pressure.

Geographical and Historical Definition

Extent and Regional Context

The Dutch Slave Coast encompassed the coastal stretch of the Bight of Benin where the Dutch West India Company (WIC) maintained trading activities, primarily spanning modern-day southeastern Togo, Benin, and western Nigeria. This region extended approximately from the Volta River delta eastward to Lagos, forming a key segment of West Africa's Atlantic-facing shoreline dedicated to the export of enslaved Africans. The WIC's presence here complemented their stronger fortifications on the adjacent Gold Coast to the west, with operations focusing on opportunistic commerce rather than extensive territorial control. Geographically, the area featured low-lying coastal plains, lagoons, and river mouths that facilitated maritime access for European vessels, while dense inland networks supplied captives from kingdoms such as and Hueda (centered at ). Dutch traders established lodges and negotiated with local rulers for slaves procured through warfare and raids by interior powers like the , which exerted influence northward. Unlike the Gold Coast's emphasis on alongside slaves, the Slave Coast's economy was overwhelmingly oriented toward human exports, with the WIC shipping significant volumes—estimated at tens of thousands annually during peak periods in the late —from ports like and Appa. In the broader regional context, the Dutch Slave Coast bridged the Gold Coast's mineral-focused trade and the Bight of Biafra's more decentralized slave markets to the east, positioning it as a competitive arena among European powers including the , English, and French. The WIC's monopoly privileges, granted in , enabled initial forays into this zone after displacing influence, though sustained Dutch dominance waned by the mid-18th century amid inter-European rivalries and African supplier preferences. Local coastal states leveraged European competition to maximize gains from slave sales, often playing Dutch agents against rivals for better terms in like textiles, guns, and alcohol.

Distinction from Adjacent Trade Regions

The Dutch Slave Coast referred to the eastern extension of Dutch trading activities beyond the Volta River, distinguishing it from the adjacent Dutch Gold Coast to the west, which spanned from Cape Three Points to the Volta and emphasized gold exports alongside slaves. While the Gold Coast forts, including Elmina captured from the Portuguese in 1637, facilitated annual gold shipments averaging several tons in the early 17th century through exchanges with Akan polities, the Slave Coast region, active from the 1660s, focused predominantly on slave procurement from coastal kingdoms such as Allada and Ardra, supplying captives primarily to Dutch American colonies like Suriname and Curaçao. This shift eastward reflected diminishing gold yields on the Gold Coast and rising demand for labor in Dutch plantation economies, with Slave Coast posts like those at Jaquin and Appa serving as transient trading lodges rather than heavily fortified enclaves. To the east, the Dutch Slave Coast adjoined the , a region extending from the Nun River mouth to Cape Lopez, where Dutch participation remained marginal compared to British and French traders sourcing slaves from Igbo interior networks via ports like and . Unlike the Yoruba and Fon-dominated supply chains of the Slave Coast, which relied on organized warfare and tribute systems under Dahomey from the late , Biafra's involved decentralized canoe-based exchanges and different ethnic compositions, limiting Dutch expansion there due to established competitors and logistical challenges. By the 18th century, Dutch slavers increasingly reverted westward to the Gold Coast for volume, underscoring the Slave Coast's role as a specialized but secondary conduit in their overall Atlantic operations.

Dutch Entry and Expansion

Formation of the Dutch West India Company

The (WIC) was incorporated on June 3, 1621, when the States General of the United Provinces granted a charter to a consortium of merchants, endowing the company with sovereign-like powers including the rights to trade, colonize, build fortifications, and conduct military operations. This charter established a 25-year monopoly over Dutch activities in the Atlantic Ocean, covering the , western , and associated islands, excluding areas already claimed by the . The formation responded to the expiration of the with Spain in 1621, enabling the WIC to pursue economic disruption of Iberian commerce through licensed privateering alongside legitimate trade. Organized into five regional chambers—, , , the Northern Quarter ( and ), and /—the WIC's governance featured 19 directors apportioned by chamber size, with holding eight seats and the dominant share of influence. Initial capital of 6,440,200 guilders was raised through public shares, though funding delays postponed early expeditions until 1623. Unlike the profit-oriented VOC, the WIC balanced commercial ambitions with state-backed warfare, prioritizing captures of Portuguese assets in and to fund operations. Regarding , the charter explicitly authorized trading posts and alliances with local rulers to access goods like gold and slaves, setting the stage for Dutch expansion onto the Slave Coast through subsequent conquests of forts. This framework facilitated the WIC's role in the transatlantic slave trade, which intensified after 1636 with the securing of coastal enclaves for slave procurement. Primary records from WIC archives underscore how these powers enabled systematic engagement with African intermediaries for human cargoes destined for Dutch American plantations.

Initial Trading Posts and Conflicts

The (WIC) initiated its presence on the Slave Coast through trade with the Kingdom of , dispatching agents as early as the 1640s to procure slaves, gold, and ivory via local intermediaries and royal officials. A key trading factory was established at Offra, Allada's principal harbor near modern Abomey-Calavi, facilitating exchanges documented in WIC voyages such as the Fortuyn, which departed Offra in December 1645 with 197 enslaved Africans bound for , arriving in February 1646. Other vessels like the Dolphijn and Enchuysen operated from Offra during this period, underscoring its role as an early hub before fortified structures were prioritized elsewhere on the coast. These operations competed with , English, and French traders, but focused initially on unfortified factories reliant on African suppliers rather than military installations. Tensions escalated due to local power dynamics and commercial rivalries, culminating in the murder of a Dutch chief factor at Offra, which strained relations with Allada authorities. By 1690–1691, rebellion erupted as Allada, backed by the neighboring Hueda kingdom at Ouidah, challenged Dutch control; in response, WIC forces destroyed the Offra factory, prompting a shift in operations toward Ouidah for continued slave procurement. This conflict reflected broader patterns of African agency in dictating European trade terms, with Allada's instability forcing Dutch adaptation amid intermittent violence and shifting alliances, though no large-scale wars ensued in the initial phase. The WIC's early foothold thus hinged on precarious negotiations rather than dominance, with annual slave exports from the region remaining modest until later infrastructural investments.

Operations and Infrastructure

Key Forts and Posts

The (WIC) established a limited number of trading posts on the Slave Coast, prioritizing lodges over fortified structures due to reliance on alliances with local African polities such as the kingdoms of and Whydah, which controlled access to slave supplies and inland trade routes. Unlike the heavily fortified castles on the adjacent Gold Coast, these installations were modest factories or lodges designed for commerce rather than defense, reflecting the centralized authority of coastal kingdoms that reduced the need for military garrisons. The primary early post was the trading factory at Offra, the coastal outlet for the Kingdom of , where Dutch merchants operated from the 1640s onward, initially sharing the site with English traders before dominating commerce there during the 1650s. This lodge facilitated the exchange of European goods, such as textiles and firearms, for slaves procured from Allada's territories and neighboring regions, serving as the WIC's main foothold until disruptions from local conflicts prompted a shift eastward. As the center of slave procurement migrated to the Kingdom of Whydah in the late , the Dutch established a small in Savi, the inland capital, adjacent to the royal palace, by the early 1700s. This location allowed direct negotiation with Whydah's rulers for captives from wars and raids, though it remained vulnerable to Dahomean incursions that culminated in the kingdom's in 1727. Additional minor posts existed at sites like Great Popo, supporting ancillary in slaves and commodities. These establishments underscored the WIC's adaptive strategy, emphasizing diplomatic and commercial leverage over permanent fortification, which contributed to their relatively short-lived dominance as French and English competitors gained ground through similar but more aggressive postings at .

Administrative and Logistical Structures

The Dutch West India Company's (WIC) administrative oversight of the Slave Coast integrated into its chamber-based structure, comprising five regional bodies in , , Noorderkwartier, , and Stad en Lande, with supreme policy authority vested in the Heren XIX (Nineteen Gentlemen). Local operations relied on appointed factors and head merchants (opperkommiesaren) at unfortified trading lodges or factories, which handled negotiations with African suppliers rather than exercising territorial sovereignty. These officials, often numbering a handful per post, managed bookkeeping, security with small garrisons of soldiers, and slave auctions, reporting hierarchically to the Director-General at on the Gold Coast for regional coordination. ![The Slave Coast around 1716.](./assets/Gerard_van_Keulen_-Slavenkust(1716\ ) Key posts on the Slave Coast included a lodge established at Offra in 1660, followed by facilities at , Jakin (Popo), Savi, and by the late , where Dutch agents bartered directly or through intermediaries amid competition from Portuguese, English, and French rivals. Civil unrest, such as the Allada-Dahomey wars in the , periodically forced temporary evacuations, underscoring the precarious, treaty-dependent nature of Dutch tenure without large-scale fortifications akin to those on the Gold Coast. Logistically, WIC vessels from Dutch ports delivered cargoes of guns, textiles, cowrie shells, and spirits—totaling thousands of items per shipment—for exchange against slaves funneled from inland kingdoms like and Dahomey. Captives, averaging 500–700 per voyage, were segregated by sex and health in lodge barracks for days to weeks awaiting ocean-going ships, with provisions like yams and water sourced locally to minimize mortality during the . After the WIC's slave trade monopoly lapsed in 1730, private Dutch traders increasingly utilized these structures, enhancing efficiency through chartered ships and hybrid public-private financing until British abolition pressures curtailed operations by 1814.

Slave Trade Mechanics

Procurement from African Suppliers

The (WIC) procured enslaved Africans on the Slave Coast primarily through barter arrangements with rulers and merchants of coastal kingdoms such as and Hueda (Whydah), exchanging European goods for captives supplied as prisoners of war or through judicial processes and raids. Trading occurred via WIC vessels anchoring offshore, with African canoes ferrying slaves to ships or Dutch agents conducting deals ashore using sloops, often after presenting gifts to secure royal permissions at inland courts like . emerged as a preferred source due to slaves commanding higher resale values, equivalent to approximately 882 kg of per captive compared to lower figures from other regions. Key trade goods included firearms and , which comprised significant portions of cargoes—such as 101,344 guns and over 1.4 million pounds of powder directed to West African markets—alongside textiles, iron bars (typically 10 bars per slave in ), cowries as currency, and items like rods and staves. These exchanges incentivized African polities to intensify slave-raiding expeditions, with local agency evident in rulers' demands for and gifts, as well as discerning selection of imported commodities. Dutch operations relied on temporary lodges rather than fortified posts on the Slave Coast proper, contrasting with their Gold Coast strongholds like , from which yachts facilitated coastal voyages to and Whydah in the 1640s and 1650s. The conquest of Hueda by the Kingdom of Dahomey in 1727 disrupted prior direct procurement channels, instituting a middleman system whereby Dahomean agents monopolized slave supplies to the coast, barring inland traders from bypassing the kingdom and forcing Europeans, including the Dutch, to deal through designated intermediaries at sites like Grehue. This led to a temporary Dutch withdrawal from Whydah and redirection of some eastward to ports like Jaquin, with slave volumes from the fluctuating—initial boycotts by suppliers in the 1730s giving way to renewed peaks in the –1760s before later declines. African , often hired from local networks, assisted in negotiations, guarded captives during holding, and ensured shipboard order, underscoring the integrated role of African labor in facilitating Dutch acquisitions until the WIC's monopoly erosion post-1734.

Volume, Routes, and Destinations

The Dutch slave trade from the Slave Coast, centered on ports such as Offra, Savi, and later Whydah, formed part of the broader Dutch Atlantic operations, with the West India Company (WIC) and private traders procuring captives primarily through African intermediaries for transatlantic shipment. Overall Dutch exports totaled approximately 500,000 enslaved Africans between 1630 and 1795, at an average of 2,000–3,000 per year, though peaking at around 7,000 annually in the 1760s; a notable share derived from West African coasts including the during periods of intensified private commerce after the WIC monopoly ended in 1734. Specific volumes from Dutch-controlled Slave Coast posts are less precisely documented, but private merchants sourced most captives south of the and near the Rio Real estuary, contributing to the trade's fluctuations amid competition with Portuguese, English, and French rivals. Routes followed the standard triangular pattern of the Atlantic system: ships departed European ports or African factories laden with trade goods (such as textiles, guns, and alcohol), exchanged for slaves at coastal entrepôts, then crossed the Middle Passage—a voyage typically lasting 50–70 days—to American destinations, returning with colonial commodities like sugar and tobacco. From the Slave Coast, Dutch vessels navigated southward along the Gulf of Guinea before heading west across the Atlantic, often via the Canary Islands for provisioning, to minimize risks from storms and disease; mortality rates during these passages averaged 15–20%, though higher in overcrowded holds. The WIC prioritized direct shipments from Benin ports to sustain sugar plantations, while post-monopoly privateers increasingly used intermediary stops at Dutch Caribbean islands for resale. Primary destinations included () during the WIC's brief control (1630–1654), where tens of thousands of slaves supported sugar production until Portuguese reconquest. Thereafter, captives were directed to hubs like and , which functioned as entrepôts for re-export—often to Spanish colonies in and the , comprising up to half of Dutch slave landings there. Mainland Guianas (, Essequibo, , ) absorbed significant numbers for plantation labor, with receiving over 100,000 slaves cumulatively by the late , many sourced from West African coasts including the Slave Coast. This distribution reflected Dutch strategic focus on re-export profits over direct colonial settlement, with alone handling thousands annually for neutral trade amid European wars.

Economic Dimensions

Profitability and Dutch Economic Impact

The Dutch West India Company's (WIC) engagements along the Slave Coast, encompassing trading posts in regions such as and , supplied a substantial portion of slaves for the transatlantic trade, contributing to the overall Dutch shipment of approximately 608,849 enslaved Africans embarked between 1595 and 1829. These operations yielded modest direct profitability for the WIC, with gross margins from the broader Dutch slave trade estimated at 63 to 79 million guilders over the full period, averaging 200,000 to 600,000 guilders annually and occasionally exceeding 1 million guilders in peak years. Individual voyage returns fluctuated, achieving 5 to 20 percent in the seventeenth century but registering losses of about 9.6 percent from 1700 to 1735, reflecting competitive pressures and operational costs. While the WIC's direct slave trading profits were limited—historical estimates place total company gains from such activities around 6 million guilders amid recurring financial strains leading to its 1674 reorganization—the trade generated ancillary economic benefits in the through stimulated , wage payments, taxes, and commissions. The Slave Coast procurement supported this by facilitating consistent slave volumes for Dutch Caribbean entrepôts like , which became hubs for re-export to . The broader economic impact extended beyond slave sales to the processing and re-export of commodities such as , , and produced by enslaved labor, which underpinned Dutch commercial dominance. In 1770, Atlantic slavery-linked activities comprised 5.2 percent of the Dutch Republic's (GDP) and 10.36 percent of Holland's GDP, with roughly 40 percent of Holland's growth from 1738 to 1780 attributable to these sectors. This multiplier effect amplified local prosperity in ports like and Middelburg, where slavery-related trade fostered employment and , though it represented a smaller fraction of overall national commerce compared to Baltic or East Indian spices.

Trade Networks with African States

The (WIC) developed trade networks on the Slave Coast primarily through direct negotiations with coastal African kingdoms, including (also known as Ardra or Ajaland) and Whydah (Hueda), which controlled access to interior slave supplies from the late 17th to early 18th centuries. These relations involved exchanging European manufactured goods—such as firearms, , textiles, iron bars, and alcohol—for enslaved Africans captured in regional wars and raids, as well as secondary commodities like and . The WIC avoided large-scale fort construction on the Slave Coast, unlike the Gold Coast, relying instead on temporary lodges and royal permissions to minimize costs and conflicts with African rulers who monopolized trade. In , the WIC initiated regular contact around 1640 by dispatching agents to the kingdom's capital, where the king enforced a monopoly on European commerce, requiring incoming traders to pay customs duties immediately upon landing and routing all transactions through royal intermediaries. This system stemmed from Allada's control over vassal states inland, which supplied captives from conflicts with neighboring polities; the kingdom's rulers used imported guns to expand raids, creating a feedback loop that increased slave availability but also heightened inter-African rivalries. Relations remained transactional rather than alliance-based, with the WIC competing against Portuguese, English, and French factors, though Dutch traders benefited from Allada's position as a primary conduit until its conquest by Dahomey in 1724. Further east at Whydah, the WIC engaged the Kingdom of Hueda through similar port-based exchanges, leveraging the site's role as a major embarkation point where African suppliers delivered war captives en masse after 1680. Whydah's kings, such as those ruling in the 1690s–1710s, demanded brokerage fees and regulated European access to beaches for slave loading, fostering a competitive where Dutch vessels often bartered shells (sourced via ) alongside metal goods for higher volumes of healthier captives destined for or . Tensions arose from African assertions of , including occasional seizures of goods or blockades, but the WIC maintained presence by aligning with local elites who profited from the trade's escalation, exporting tens of thousands annually by the early 1700s before Dahomey's 1727 invasion redirected flows through conquered territories. Post-conquest, Dahomey integrated former Allada and Whydah networks under centralized control, compelling the WIC to negotiate anew with King Agaja (r. 1718–1740), who imposed stricter terms including annual tributes and limits on independent African brokers to curb smuggling. Dahomey's military raids into the interior, fueled by Dutch-supplied arms, sustained supply chains but shifted dynamics toward greater African leverage, as the kingdom alternated between favoring Dutch traders and English rivals based on offers of guns and brandy. These networks exemplified causal interdependence: European demand incentivized African state expansion via enslavement, yet local agency—evident in royal pricing and selective partnerships—dictated terms, with the WIC adapting to avoid over-reliance on any single polity amid fluctuating alliances. By the 1730s, as WIC monopoly waned, private Dutch firms deepened these ties, though geopolitical pressures eventually curtailed operations.

Decline and Transition

Factors of Decline

The bankruptcy of the (WIC) in 1674, precipitated by massive debts from failed Brazilian conquests (totaling 36 million guilders by 1649) and costs of the Third Anglo-Dutch War (1672–1674), severely constrained its capacity to sustain African operations, including on the Slave Coast. Reorganized as the Second WIC with reduced capital (1.2 million guilders versus the original 7 million), the company maintained forts but shifted focus, with slave trade volumes not significantly recovering until subcontracts like the Spanish asiento in the 1680s. A critical downturn occurred between 1700 and 1725, when prohibitions on selling slaves to foreign colonies—enforced after earlier to British and Spanish markets—reduced Dutch export volumes from , as domestic plantations absorbed fewer captives relative to competitors. Local instability compounded this; political unrest tied to conflicts between the Kingdom of Dahomey and coastal Aja states prompted the Dutch to abandon their Ouidah trading post in 1725, relocating to Jaquin where Fort Zeelandia was constructed, though operations remained marginal thereafter. By the mid-18th century, the WIC's monopoly on the West African slave trade eroded, fully relinquished by 1734–1738 amid competition from British and French traders who secured preferential access through African rulers and superior naval presence. The (1780–1784) and the 1773 economic recession further crippled Dutch merchant shipping, halving trade volumes and leading to a broader decline from 1780 to 1815, with the Dutch share of the Atlantic trade falling to under 5% as British dominance grew on the Slave Coast. Planter bankruptcies in Dutch colonies like , driven by overinvestment in volatile plantations post-1730, diminished demand for slaves, exacerbating the WIC's financial woes until state takeover in 1791 and dissolution amid French invasion in 1794.

Cession to British Control

In the early , political upheaval in the region led to the effective end of organized Dutch control over trading posts on the Slave Coast, without any formal cession to British authorities. The conquest of by the Kingdom of Dahomey in 1727 resulted in the expulsion of Dutch traders from their established post there, disrupting operations that had previously centered on procuring slaves from the Kingdom of and Hueda intermediaries. Following this setback, Dutch agents relocated southward to Jaquim (modern Jakin, near the Togolese-Beninese ), where they expanded a trading outpost into Fort Zeelandia around 1733 under the direction of figures like Abraham Hertog, aiming to revive slave exports amid ongoing regional instability. However, conflicts between Dahomey and local coastal states destroyed the fort and halted trade at Jaquim between 1732 and 1734, with Dutch remnants persisting only at minor sites like Grand-Popo and . By 1760, persistent African warfare, intensified competition from British and French merchants who maintained their own fortified posts (such as the English William's Fort at , operational since the 1680s), and a broader shift in Dutch slave sourcing toward the Gold Coast and rendered the Slave Coast untenable, prompting full abandonment. This withdrawal marked a transition in European influence, as British traders, leveraging direct negotiations with Dahomian authorities and naval superiority, expanded their independent foothold in and adjacent areas like by the mid-18th century, though formal British colonial control over parts of the former Slave Coast region materialized only in the through conquests and protectorates rather than Dutch handover. The absence of ceded infrastructure reflected the Dutch Slave Coast's reliance on ephemeral trading lodges rather than enduring forts, contrasting with later Dutch Gold Coast possessions transferred via treaty in 1872.

Assessments and Comparisons

Strategic Achievements and Criticisms

The (WIC) achieved strategic flexibility on the Slave Coast through lightweight trading posts rather than extensive fortifications, beginning with a lodge at Offra in 1660 and shifting to (Whydah) amid competition with English and French rivals. This approach minimized overhead costs associated with stone forts on the adjacent Gold Coast, enabling efficient procurement from local kingdoms such as and Hueda, where the WIC purchased around 800 enslaved individuals annually between 1636 and 1647. By leveraging alliances with African intermediaries and focusing on high-volume exchanges of European goods for captives, the Dutch temporarily dominated regional slave exports during the mid-17th century, integrating these supplies into broader Atlantic networks, including re-exports from to Spanish and other colonies after the loss of in 1654. These operations contributed to the WIC's role in transporting over 21,000 enslaved from the (encompassing the Slave Coast) between 1626 and 1663, supporting Dutch economic interests despite the company's overall 5-6% share of the transatlantic trade. The strategy's emphasis on diplomatic maneuvering with coastal states like allowed sustained access to interior raiding networks, yielding verifiable profits that briefly offset WIC's military expenditures elsewhere in . Critics of WIC strategy highlight the vulnerability inherent in unfortified positions, which exposed traders to abrupt disruptions from African power shifts, such as the Kingdom of Dahomey's conquest of in 1724 and Whydah in 1727, leading to the destruction of key trading hubs and redirection of slave flows under Dahomean control. This reliance on fluid alliances with local monarchs, rather than territorial control, resulted in inconsistent supply volumes, as African states imposed monopolies and variable pricing on captives, complicating WIC logistics and profitability compared to rivals with stronger footholds. Operational shortcomings were exacerbated by the WIC's internal financial mismanagement and in 1674, which curtailed investments in Slave Coast infrastructure and allowed British and French competitors to erode Dutch market share through more aggressive fort-building and naval protection. Historians note that the company's monopoly privileges fostered inefficiencies, including corruption among directors and overdependence on privateers rather than dedicated trading fleets, ultimately limiting long-term strategic gains despite early successes. The absence of pacification efforts in the further perpetuated supply risks, as evidenced by fluctuating exports post-1670s amid rising Dahomean .

Comparative Role in Atlantic Slave Trade

The Dutch engagement in the Atlantic slave trade, centered on operations along the Slave Coast (primarily the ), transported an estimated 500,000 to 600,000 enslaved Africans across the ocean between 1596 and 1829, representing approximately 4 to 5 percent of the total transatlantic of about 12.5 million embarked captives. This share positioned the behind the dominant carriers: and combined for over 5.8 million (46 percent), Britain for 3.3 million (26 percent), for 1.4 million (11 percent), and for 1.1 million (9 percent). Dutch voyages peaked in the mid-17th century, with the West India Company (WIC) leveraging captured Portuguese forts like (1637) and establishing posts at and to procure slaves from local kingdoms such as Dahomey and Whydah, often in exchange for guns, textiles, and shells. Unlike the Portuguese focus on or British emphasis on the Gold Coast and , Dutch traders sourced disproportionately from the Slave Coast, which supplied around 2 million slaves overall (16 percent of the trade), enabling efficient middle-passage routes to and Spanish American ports under asiento monopolies granted in 1650 and 1662. Comparatively, the Dutch trade's scale diminished after 1675 amid competition from more agile British and French interlopers, WIC mismanagement, and the loss of Brazilian sugar colonies in 1654, which redirected efforts toward smaller Caribbean and Guianese plantations requiring fewer slaves. Mortality rates on Dutch ships averaged 14 to 15 percent, comparable to British (13 percent) but higher than French (10 percent) in the 18th century, reflecting overcrowding and longer detours via Curaçao for resale. While the Netherlands lacked the vast plantation economies driving Iberian or Anglo-French volumes, Dutch intermediaries facilitated up to 100,000 slaves to Spanish America in the 17th century alone, underscoring a specialized resale role rather than direct colonial demand; post-1700, private traders under the WIC's loosened monopoly carried most remaining voyages, totaling under 200,000. This contrasts with Britain's state-backed expansion after 1713 (Asiento transfer) and France's Code Noir-driven imports for Saint-Domingue, where peak annual exports exceeded Dutch capacities by factors of 5 to 10. Overall, Dutch contributions, though modest in volume, amplified trade networks through fort-based coercion and European rivalries, with empirical records from WIC ledgers and port logs confirming lower per-voyage loads (averaging 300-400 captives) versus British (400-500).

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