Which of the following was the result of the other three the us cut off supplies of steel and oil to japan the us sent land lease aid to china who was being targeted by japan the us froze all japanese assets the japanese attacked pearl harbor hawaii

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.