Why did fighting break out between american indians and the us army in the black hills region? select all that apply.

a) gold was discovered in the black hills on land belonging to the sioux.

b) miners and settlers demanded that the government take more land from the american indians.

c) the government tried to confine to reservations american indians in the region.

d) the government insisted on protecting sioux lands and halting settlement.

answers are a, b,c