The containment policy aimed to halt the spread of communism by preventing its expansion into new territories and countries.

George F. Kennan, a State Department official, is credited with developing the concept of containment in his famous "Long Telegram" in 1946.

The Berlin Blockade in 1948, when the Soviet Union blocked access to West Berlin, prompted the United States to initiate the containment policy.

The Marshall Plan, introduced in 1948, provided economic assistance to Western European countries to help them rebuild after the devastation of World War II and prevent the spread of communism.

The North Atlantic Treaty Organization (NATO) was established in 1949 as a collective defense alliance among North American and Western European countries to deter Soviet aggression.

The Truman Doctrine, announced in 1947, declared the United States' commitment to provide military and economic assistance to countries threatened by communist expansion.

The Korean War was a conflict between North and South Korea from 1950 to 1953, in which the United States and its allies intervened to support South Korea against North Korean aggression.

The Berlin Wall was a concrete barrier constructed by the Soviet Union in 1961 to divide East and West Berlin, preventing East Germans from escaping to the West.

The Cuban Missile Crisis in 1962 was a tense confrontation between the United States and the Soviet Union over the deployment of Soviet missiles in Cuba, which brought the world to the brink of nuclear war.

The Vietnam War was a conflict between North and South Vietnam from 1954 to 1975, in which the United States and its allies intervened to support South Vietnam against North Vietnamese aggression.

The collapse of the Berlin Wall in 1989 was a pivotal event that marked the end of the Cold War, led to the reunification of Germany, and contributed to the dissolution of the Soviet Union.

Richard Nixon, the 37th U.S. president, is often associated with the policy of "détente" during the Cold War, which aimed to reduce tensions and improve relations between the United States and the Soviet Union.

The Strategic Arms Limitation Treaty (SALT I), signed in 1972, was an agreement between the United States and the Soviet Union to limit the number of nuclear weapons and delivery systems.

Ronald Reagan, the 40th U.S. president, is known for his "Star Wars" initiative, also known as the Strategic Defense Initiative (SDI), which aimed to develop a missile defense system to protect the United States from nuclear attack.

The Helsinki Accords, signed in 1975, were a series of agreements that promoted human rights, economic cooperation, and security in Europe during the Cold War.