USA HISTORY

Detailed explanation-1: -Britain, France, the United States, Canada, and eight other western European countries established the North Atlantic Treaty Organization (NATO) in 1949. In 1955, the Soviet Union responded by created the Warsaw Pact.

Detailed explanation-2: -The Warsaw Pact was a collective defence treaty established by the Soviet Union and seven other Soviet satellite states in Central and Eastern Europe: Albania, Bulgaria, Czechoslovakia, East Germany, Hungary, Poland and Romania (Albania withdrew in 1968).

Detailed explanation-3: -Major alliances formed after World War II include the ANZUS Pact, the Arab League, ASEAN, the Organization of American States, the Southeast Asia Treaty Organization, and the Warsaw Pact.

Detailed explanation-4: -In World War II, the three great Allied powers-Great Britain, the United States, and the Soviet Union-formed a Grand Alliance that was the key to victory.

Detailed explanation-5: -In 1948, after the beginning of the Cold War, Europe became split into two opposing camps: the US-backed NATO members and the Warsaw Pact countries supported by the USSR. The North Atlantic Treaty Organization (NATO) and the Warsaw Pact were two ideologically opposed military and security entities of the Cold War.