From 1619 on, not long after the first settlement, the need for colonial labor was bolstered ... 45,000 Africans are transported annually on British ships. 1700s: Almost half of the slaves coming ...

Around 1750, the British ... Africa or the Caribbean. Nearly 1 in 5 Americans, or 300,000 people, were enslaved. Poverty in Northern Ireland forced a massive flight of Scots-Irish to the colonies.