Answer: In early August 1964, two U.S. destroyers stationed in the Gulf of Tonkin in Vietnam radioed that they had been fired upon by North Vietnamese forces. In response to these reported incidents, President Lyndon B. Johnson requested permission from the U.S. Congress to increase the U.S. military presence in Indochina.
Explanation:
C) It United groups in both North and South.
the anser is c becuse if you but it together it make sice but the other one are rong
I think the answer is direct democracies.