Why do you think the u. s. backed down on its enforcement of the treaty once gold was discovered in the black hills?

because the land there was really good. it was also too late for the military to attempt to get rid of people because over 1500 had already settled there.

Explanation:

in 1859, brown and 21 of his followers attacked and occupied the federal arsenal in harper's ferry. their goal was to capture supplies and use them to arm a slave rebellion. brown was captured during the raid and later hanged, but not before becoming an anti-slavery icon. abolitionist and insurrectionist

explanation: