USA HISTORY

Detailed explanation-1: -The first 130 years the Portuguese dominated the transatlantic slave trade . After 1651 they fell into second position behind the British who became the primary carriers of Africans to the New World, a position they continued to maintain until the end of the trade in the early 19th century.

Detailed explanation-2: -Britain was the most dominant between 1640 and 1807 and it is estimated that Britain transported 3.1 million Africans (of whom 2.7 million arrived) to the British colonies in the Caribbean, North and South America and to other countries.

Detailed explanation-3: -Legally ("de jure") slave owners could not win in court, and abolitionists provided legal help for enslaved black people. However actual ("de facto") slavery continued in Britain with ten to fourteen thousand slaves in England and Wales, who were mostly domestic servants.

Detailed explanation-4: -Western Africa (part of which became known as “the Slave Coast"), Angola and nearby Kingdoms and later Central Africa, became the source for enslaved people to meet the demand for labour.