Which three developments directly gave black americans the opportunity to escape southern racism and settle the western territories
american revolution
fourteenth amendment
homestead act
thirteenth amendment
annexation of texas

How did the united states respond when north vietnam attacked a us warship and sent troops to south vietnam in the early 1960s? a. the united states declined to assist south vietnam against the north. b. us leaders authorized south vietnam to invade north vietnam. c. the president did not sign the gulf of tonkin resolution. d. congress authorized the president to escalate the conflict.