Answer:
A.The communist movement grew stronger in North Vietnam.
C.US leaders worried that other countries would fall to communism
D.People worried that Vietnam would become communist.
Step-by-step explanation:
Ha Cho Minh was involved in the struggle for independence of Vietnam from the French. He was exposed to communist rule during his stay in the Soviet Union and independence was finally achieved. Communist rebels defeated the French and they split the country into North and South. The communist ruled in the North.
This validates that The communist movement grew stronger in North Vietnam.