What was the primary reason that the spanish and portuguese turned to enslaved africans as a source of labor for their mines and farms in the new world?
a. most of the native americans used as slave laborers had died from overwork and european diseases.
b. most native american slave laborers did not have the skills necessary to produce new world crops.
c. it was less expensive to transport the africans by sea than to bring in more native american slaves by land.
d. native americans were willing to the africans captive but refused to turn their own people into slaves.

d

step-by-step explanation:

look at the x and y axis

the government paid religious orders to provide basic education to native american children on reservations. in the late 19th and early 20th centuries, the bureau of indian affairs (bia) founded additional boarding schools based on the assimilation model of the off-reservation carlisle indian industrial school.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.