Why did the spanish begin using enslaved africans instead of enslaved american indians to work on plantations?

plantation owners could trade goods for africans but not american indians.

european diseases had killed much of the american indian population.

there was too much resistance among american indians.

american indians fled to the north and became fur traders for the french.

Match these items. 1 . stephen douglas published "north star" 2 . frederick douglass first african slaves arrived in jamestown 3 . crittenden compromise proposed kansas-nebraska act 4 . republican party extend 36° 30' line to california 5 . abolitionists servitude in exchange for passage to the united states 6 . indentured struggle between proslavery and antislavery groups 7 . jefferson davis formed to prevent spread of slavery 8 . "bleeding kansas" wanted slavery abolished 9 . uncle tom's cabin president of confederacy 10 . 1619 harriet beecher stowe