USA: A slave auction in New Orleans. Benson John Lossing, ed. Harper's Encyclopedia of United States History, New York, 1912

The Atlantic slave trade or transatlantic slave trade took place across the Atlantic Ocean from the 16th through to the 19th centuries. The vast majority of those enslaved that were transported to the New World, many on the triangular trade route and its Middle Passage, were West Africans from the central and western parts of the continent sold by western Africans to western European slave traders, or by direct European capture to the Americas. The numbers were so great that Africans who came by way of the slave trade became the most numerous Old World immigrants in both North and South America before the late 18th century. Far more slaves were taken to South America than to the north. The South Atlantic economic system centered on producing commodity crops, and making goods and clothing to sell in Europe, and increasing the numbers of African slaves brought to the New World. (Photo by: Pictures From History/Universal Images Group via Getty Images)