1945-1975 By acoviello16 Aug 6, 1945 The US drops an atomic bomb on Hiroshima, Japan. Sep 2, 1945 World War II ends. Oct 24, 1945 The United Nations was established. Jul 4, 1946 Philippines gained fulled independence from the US. Mar 1, 1947 Truman Doctrine: prevent Soviet expansion during the Cold War Apr 3, 1948 The Marshall Plan, which gave aid to European countries post-war to help rebuild their economies, came into effect. Jan 20, 1949 Truman's second inaguration. Period: Jun 25, 1950 to Jul 27, 1953 Korean War Feb 27, 1951 Twenty-Second Amendment: limits the president to two terms. Jul 25, 1952 Puerto Rico becomes a UC commonwealth. Jan 20, 1953 Dwight Eisenhower is inaugurated as the US's 34th president. May 17, 1954 Brown v. Board of Education of Topeka: declared state laws allowing segregation in schools to be unconstitutional. Period: Nov 1, 1955 to Apr 30, 1975 Vietnam War Aug 28, 1963 Martin Luther King Jr. delivers his "I have a dream..." speech. Nov 22, 1963 President Kennedy is assassinated. Jul 2, 1964 President Johnson signs the Civil Rights Act. Apr 4, 1968 Martin Luther King Jr. is assassinated. Jan 20, 1969 Nixon is inaugurated. Jan 20, 1977 Jimmy Carter is inaugurated.