* The Cold War (1947-1991): The Cold War was a global conflict between the United States and the Soviet Union and their respective allies. The Cold War was characterized by political and military tension, as well as by competition in the areas of science, technology, and space exploration.
* The Civil Rights Movement (1954-1968): The Civil Rights Movement was a social movement that aimed to secure equal rights for African Americans in the United States. The Civil Rights Movement was marked by protests, marches, and civil disobedience, and it resulted in the passage of landmark legislation, such as the Civil Rights Act of 1964 and the Voting Rights Act of 1965.
* The Space Race (1957-1975): The Space Race was a competition between the United States and the Soviet Union to achieve firsts in space exploration. The Space Race began in 1957 with the launch of the Soviet satellite Sputnik, and it culminated in 1969 with the landing of American astronauts on the moon.
* The Vietnam War (1955-1975): The Vietnam War was a conflict between North and South Vietnam that began in the 1950s and escalated into a full-scale war in the late 1960s. The Vietnam War was a costly and divisive conflict, and it ended in a communist victory in 1975.