Why where slaves important to colonist ?

Slaves started the new colinies econamy. They were free laboros that tended to the land for cheaply or no cost at all. Due to this, the colonist were able to sell goods back to the main land for a low price and was able to maintain a plentiful food supply for little or no cost to them.

Explanation:

when in doubt choose c

it's what my teacher told my class when we were going into psats