According to the ruling in the plessy v. ferguson case, why was segregation acceptable?
a. segregation was legal because african americans were not citizens.
b. segregation was legal as long as the facilities for blacks and whites were equal.
c. segregation was acceptable in private facilities only.
d. segregation was acceptable on a state by state basis.

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.