Answer:
Here is a timeline of the Cold War events you provided:
1947: Truman Doctrine announced, offering aid to countries threatened by communism
1947: Yalta Conference held, dividing Europe into spheres of influence and setting the stage for the Cold War
1948: Berlin blockade begins, leading to the Berlin Airlift
1949: NATO established as a military alliance to counter Soviet aggression
1949: China turns communist after a civil war, leading to a shift in the balance of power in Asia
1950: Korean War begins, with North Korea invading South Korea
1950: McCarthyism becomes a dominant political force in the United States, targeting suspected communists and their sympathizers
1952: Executive Order 9981 issued, desegregating the military
1953: Korean War ends in a stalemate, with the two Koreas remaining divided
1954: McCarthyism begins to decline after the Senate censures Senator Joseph McCarthy
1954: The GI Bill is expanded, providing benefits for returning veterans from World War II
1955: The Interstate Highway Act is passed, authorizing the construction of a national highway system
1956: In God We Trust adopted as the official motto of the United States
1957: Julius and Ethel Rosenberg executed for passing nuclear secrets to the Soviet Union.