Answer:
1) C. Cambodia and Laos, 2) A. containment, 3) the divsion of Vietnam into two countries.
Step-by-step explanation:
1) The French Indochina occupied Vietnam, Cambodia and Laos.
2) The theory of Dwight Eisenhower was based on the idea that the fall of the French Indochina to the Communists would lead to "domino effect" in South East Asia and, therefore, the United States helped France in its effort of restoring the colonial rule.
3) After the French defeat in Indochina, the Geneva Accords (1954) established the temporary divsion of Vietnam into two countries and ordered democratic elections for 1956.