need for labor (indentured servants too few and caused problems, natives died of disease or if enslaved could easily escape bc they knew the land)
Slave trade was already established by Portuguese and African Kingdoms
Africans were immune to diseases (small pox, malaria)
all colonies had slaves: New England: very few, mainly helped on small farms
Middle Colonies: mainly in Port Cities or household servants
South: a majority due to plantation economy; however most slaves went to West Indies on sugar cane plantations