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.
The Atlantic slave trade or transatlantic slave trade involved the transportation by slave traders of enslaved african people , mainly to the Americas.The slave trade regulary used the triangular trade route and it's middle passage , and existed from the 16th to the 19th centuries.
The transatlantic slave trade began during the 15th century when portugal, and subsequently other European kingdoms, were finally able to expand overseas and reach Africa The portuguese frist began to kidnap people from the west coast of Africa and to take those they enslaved back to Europe.