Which country forced American Indians to work in mines and plantations

A. Peru

B. France

C. Spain

D. Mexico

C. After taking their land, the Spanish used the Natives as slave up until priest Fray Antonio De Montesinos said in a sermon that the Spanish were being cruel and unjust to the Natives. After this they started to use African American slaves.

Its not A because Peru didn't exist yet. Its not B because France had very few small settlements. And it is not D because Mexico also didn't exist.

The answer is c the Spain people treated them very poorly