The Atlantic slave trade or transatlantic slave trade took place across the Atlantic Ocean from the 15th 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 other western Africans to western European slave traders, with a small minority being captured directly by the slave traders in coastal raids, and brought 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 and Caribbean 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. This was crucial to those western European countries which, in the late 17th and 18th centuries, were vying with each other to create overseas empires.