Age of Discovery

The Age of Discovery (c. 1418 – c. 1620), also known as the Age of Exploration, was part of the early modern period and overlapped with the Age of Sail. It was a period from approximately the 15th to the 17th century, during which seafarers from European countries explored, colonized, and conquered regions across the globe. The Age of Discovery was a transformative period when previously isolated parts of the world became connected to form the world-system, and laid the groundwork for globalization. The extensive overseas exploration, particularly the opening of maritime routes to the East Indies and European colonization of the Americas by the Spanish and Portuguese, later joined by the English, French, and Dutch, spurred international global trade. The interconnected global economy of the 21st century has its origins in the expansion of trade networks during this era.

The exploration created colonial empires and marked an increased adoption of colonialism as a government policy in several European states. As such, it is sometimes synonymous with the first wave of European colonization. This colonization reshaped power dynamics causing geopolitical shifts in Europe and creating new centers of power beyond Europe. Having set human history on the global common course, the legacy of the Age still shapes the world today.

European oceanic exploration started with the maritime expeditions of Portugal to the Canary Islands in 1336, and with the Portuguese discoveries of the Atlantic archipelagos of Madeira and Azores, the coast of West Africa in 1434, and the establishment of the sea route to India in 1498 by Vasco da Gama, which initiated the Portuguese maritime and trade presence in Kerala and the Indian Ocean. Spain sponsored and financed the transatlantic voyages of Christopher Columbus (1492–1504), which marked the beginning of colonization in the Americas, and the Magellan expedition (1519–1522), which opened a route from the Atlantic to the Pacific and, under Juan Sebastián Elcano, completed the first circumnavigation of the globe. These Spanish expeditions significantly impacted European perceptions of the world and eventually led to numerous naval expeditions across the Atlantic, Indian, and Pacific Oceans, and land expeditions in the Americas, Asia, Africa, and Australia that continued into the 19th century, followed by Polar exploration in the 20th century.

European exploration initiated the Columbian exchange between the Old World (Europe, Asia, and Africa) and New World (Americas). This exchange involved the transfer of plants, animals, human populations (including slaves), communicable diseases, and culture across the Eastern and Western Hemispheres. The Age of Discovery and European exploration involved mapping the world, shaping a new worldview and facilitating contact with distant civilizations. The continents drawn by European mapmakers developed from abstract "blobs" into the outlines more recognizable to us. Simultaneously, the spread of new diseases, especially affecting native Americans, led to rapid declines in some populations. The era saw widespread enslavement, exploitation and military conquest of indigenous peoples, concurrent with the growing economic influence and spread of Western culture, science and technology leading to a faster-than-exponential population growth world-wide.

The concept of discovery has been scrutinized, critically highlighting the history of the core term of this periodization. The term "age of discovery" is in historical literature and still commonly used. J. H. Parry, calling the period the Age of Reconnaissance, argues that not only was the era one of European explorations, but it also produced the expansion of geographical knowledge and empirical science. "It saw also the first major victories of empirical inquiry over authority, the beginnings of that close association of science, technology, and everyday work which is an essential characteristic of the modern western world." Anthony Pagden draws on the work of Edmundo O'Gorman for the statement that "For all Europeans, the events of October 1492 constituted a 'discovery'. Something of which they had no prior knowledge had suddenly presented itself to their gaze." O'Gorman argues that the physical encounter with new territories was less important than the Europeans' effort to integrate this new knowledge into their worldview, what he calls "the invention of America". Pagden examines the origins of the terms "discovery" and "invention". In English, "discovery" and its forms in romance languages derive from "disco-operio, meaning to uncover, to reveal, to expose to the gaze", what was revealed existed previously. Few Europeans during the period used the term "invention" for the European encounters, with the exception of Martin Waldseemüller, whose map first used the term "America".

A central legal concept of the discovery doctrine, expounded by the US Supreme Court in 1823, draws on assertions of European powers' right to claim land during their explorations. The concept of "discovery" has been used to enforce colonial claiming and discovery, but has been challenged by indigenous peoples and researchers. Many indigenous peoples have fundamentally challenged the concept of colonial claiming of "discovery" over their lands and people, as forced and negating indigenous presence.

The period alternatively called the Age of Exploration, has been scrutinized through reflections on the exploration. Its understanding and use, has been discussed as being framed and used for colonial ventures, discrimination and exploitation, by combining it with concepts such as the frontier (as in Frontier Thesis) and manifest destiny, up to the contemporary age of space exploration. Alternatively, the term contact, as in first contact, has been used to shed more light on the age of discovery and colonialism, using the alternative names of Age of Contact or Contact Period, discussing it as an "unfinished, diverse project".

The Portuguese began systematically exploring the Atlantic coast of Africa in 1418, under the sponsorship of Prince Henry the Navigator. In 1488, Bartolomeu Dias reached the Indian Ocean by this route.