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Orville and Wilbur Wright successfully conducted the first powered, sustained and controlled airplane flight in 1903.

Theodore Roosevelt, the 26th president, is known for his progressive policies and conservation efforts, served from 1901 to 1909.

One of the deadliest industrial disasters in the US history, leading to many workplace reforms, occurred in 1911.

The movement of 6 million African Americans from the rural Southern United States to the urban Northeast, Midwest, and West from 1916 to 1970.

Amendment that granted American women the right to vote, ratified in 1920.

A major stock market collapse that marked the beginning of the Great Depression, happened on October 29, 1929.

Series of programs, public work projects, financial reforms, and regulations enacted by President Franklin D. Roosevelt in response to the Great Depression during the 1930s.

A surprise military strike by the Imperial Japanese Navy Air Service against the United States naval base at Pearl Harbor, Hawaii on December 7, 1941.

An American initiative to aid Western Europe, in which the United States gave over $12 billion in economic support to help rebuild Western European economies after the end of World War II in 1948.$