In the 1870s, gold was discovered in the Blacks Hills. The federal government first tried to A) buy the territory from the American Indians.

B) restrict all Sioux Indians to their reservation.

C) call on the US military to fight the Sioux

D) sign a new treaty with the area's tribal chiefs.​

Which of the following was a major outcome of european imperialism in africa after the industrial revolution? o a. the area around the suez canal experienced decades of military conflict o b. africans in the belgian congo suffered forced labor and oppression o c. the discovery of rich matural resources led to african economic prosperity. o d. europeans brought disease to central africa, killing thousands.