Before european nations used slaves from africa in the new world, they used: criminals poor peasants indigenous populations

Explanation:

Before the slaves importation to the New World, criminals were used as slaves. At that time, African slavery wasn't a thing, but they send their criminals out of the Nation. Then, with the demand of slaves in America, African slavery became a complete market.

the answer is d.index

answer; make a no-nonsense accusation of the other;