Greek War of Independence

The Greek War of Independence, also known as the Greek Revolution or the Greek Revolution of 1821, was a successful war of independence by Greek revolutionaries against the Ottoman Empire between 1821 and 1829. In 1826, the Greeks were assisted by the British Empire, Kingdom of France, and the Russian Empire, while the Ottomans were aided by their vassals, especially by the Eyalet of Egypt. The war led to the formation of modern Greece, which would be expanded to its modern size in later years. The revolution is celebrated by Greeks around the world as independence day on 25 March.

All Greek territory, except the Ionian Islands, came under Ottoman rule in the 15th century, in the decades surrounding the Fall of Constantinople. During the following centuries, there were sporadic but unsuccessful Greek uprisings against Ottoman rule. In 1814, a secret organization called the Filiki Eteria (Society of Friends) was founded with the aim of liberating Greece. It planned to launch revolts in the Peloponnese, the Danubian Principalities, and Constantinople. The insurrection was planned for 25 March 1821, the Orthodox Christian Feast of the Annunciation. However, the plans were discovered by the Ottoman authorities, forcing it to start earlier.

The first revolt began on 21 February 1821 in the Danubian Principalities, but it was soon put down by the Ottomans. These events urged Greeks in the Peloponnese into action and on 17 March 1821, the Maniots were first to declare war. In September 1821, the Greeks, under the leadership of Theodoros Kolokotronis, captured Tripolitsa. Revolts in Crete, Macedonia, and Central Greece broke out, but were suppressed. Greek fleets achieved success against the Ottoman navy in the Aegean Sea and prevented Ottoman reinforcements from arriving by sea. Tensions developed among Greek factions, leading to two consecutive civil wars. The Ottoman Sultan called in Muhammad Ali of Egypt, who agreed to send his son, Ibrahim Pasha, to Greece with an army to suppress the revolt in return for territorial gains. Ibrahim landed in the Peloponnese in February 1825 and brought most of the peninsula under Egyptian control by the end of that year. Despite a failed invasion of Mani, Athens also fell and revolutionary morale decreased.

The three great powers—Russia, Britain, and France—decided to intervene, sending their naval squadrons to Greece in 1827. They destroyed the Ottoman–Egyptian fleet at the Battle of Navarino, and turned the tide in favor of the revolutionaries. In 1828, the Egyptian army withdrew under pressure from a French expeditionary force. The Ottoman garrisons in the Peloponnese surrendered and the Greek revolutionaries retook central Greece. The Ottoman Empire declared war on Russia allowing for the Russian army to move into the Balkans. This forced the Ottomans to accept Greek autonomy in the Treaty of Adrianople and semi-autonomy for Serbia and the Romanian principalities. After nine years of war, Greece was recognized as an independent state under the London Protocol of February 1830. Further negotiations in 1832 led to the London Conference and the Treaty of Constantinople, which defined the final borders of the new state and established Prince Otto of Bavaria as the first king of Greece.

The slogan of the revolution, Eleftheria i thanatos 'Freedom or death', became Greece's national motto.

The Fall of Constantinople on 29 May 1453 and the subsequent fall of the successor states of the Byzantine Empire marked the end of Byzantine sovereignty. After that, the Ottoman Empire ruled the Balkans and Anatolia (Asia Minor), with some exceptions. Orthodox Christians were granted some political rights under Ottoman rule, but they were considered inferior subjects. The majority of Greeks were called Rayah by the Turks, a name that referred to the large mass of non-Muslim subjects under the Ottoman ruling class.

Meanwhile, Greek intellectuals and humanists, who had migrated west before or during the Ottoman invasions, such as Demetrios Chalkokondyles and Leonardos Philaras, began to call for the liberation of their homeland. Demetrius Chalcondyles called on Venice and "all of the Latins" to aid the Greeks against "the abominable, monstrous, and impious barbarian Turks". However, Greece was to remain under Ottoman rule for several more centuries.

The Greek Revolution was not an isolated event; numerous failed attempts at regaining independence took place throughout the Ottoman era. Throughout the 17th century, there was great resistance to the Ottomans in the Morea and elsewhere, as evidenced by revolts led by Dionysius the Philosopher. After the Morean War, the Peloponnese came under Venetian rule for 30 years, and remained in turmoil from then on and throughout the 17th century, as bands of klephts multiplied.