The congressional resolution on vietnam had been drafted before the gulf of tonkin incident took place

True -

The Tonkin incident - called totally unprovoked by the administration - which led Congress on Aug. 7, 1964 to pass a resolution declaring that the United States was “prepares, as the President directs, to take all necessary steps, including the use of armed force,” to assist South Vietnam.

answer; i believe the correct answer is (a) nigeria is the largest african crude (oil) supplier; /// so revenue from petroleum;