1. Dropping the atomic bomb during World War II (1945)

The United States used the first atomic weapons during World War II, bombing the Japanese cities of Hiroshima and Nagasaki in August 1945. Creation of the atomic bomb unleashed the terrifying possibilities of atomic energy and launched a frantic search for peaceful uses of atomic energy even as more powerful bombs were being developed.

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Robert Wedgeworth is the University Librarian and Professor of Library Administration at the University of Illinois at Champaign-Urbana. His choices for the most important events of the 1900's reflect a general approach. See why a British rock band and an American baseball player made it onto his list.

1.

Dropping the atomic bomb during World War II (1945)

2. The assassination of President John F. Kennedy (Nov. 22, 1963)
3. The U.S. Supreme Court ruling in Brown v. Board of Education of Topeka (1954)
4.

The launch of Sputnik I by the Soviet Union (1957)

5. The passage of the Civil Rights Act of 1964
6. The first human being lands on the moon (July 20, 1969)
7. The first Beatles performances in the United States (1964)
8. The development of the Salk vaccine to fight polio (1953)
9. The end of apartheid in South Africa (early 1990's)
10. The debut of Jackie Robinson (1947)