-
-
W. D. Boyce incorporates the Boy Scouts of America on February 8, 1910.
-
Fire kills 146 workers at the Triangle Shirtwaist Factory, on March 25, 1911.
-
Arizona becomes the 48th state and last of the contiguous states admitted to the Union on February 14, 1912.
-
HMS Titanic strikes an iceberg on April 14, 1912.
-
Jim Thorpe, and American Indian from Oklahoma's Fox and Sac Nation, wins gold medals in the pentathlon and decathlon during the 1912 Olympic Games.
-
Willa Cather publishes O Pioneers! in 1913.
-
The Panama Railway steamship "SS Ancon," made the first official transit of the Panama Canal on August 15, 1914.
-
President Woodrow Wilson signs the Jones-Shafroth Act on March 2, 1917, establishing the right of U.S. citizenship to residents of Puerto Rico.
-
-
On August 18, 1920, the 19th Amendment to the U.S. Constitution is ratified prohibiting any U.S. citizen from being denied the right to vote based on sex.
-
KDKA in Pittsburgh, PA, becomes the first radio station to offer regular broadcasts on November 2, 1920.
-
On March 4, 1921, Congress approved the burial of an unidentified American soldier from World War I in the Tomb of the Unknown Soldier at Arlington National Cemetery.
-
Lila Bell and DeWitt Wallace begin publishing Reader's Digest in 1922.
-
Tennessee school teacher John T. Scopes' trial for teaching Darwin's "Theory of Evolution" begins July 1925.
-
F. Scott Fitzgerald publishes The Great Gatsby in 1925.
-
A. Milne publishes his first collection of stories about the character Winnie-the-Pooh in 1926.
-
Charles Lindbergh lands "Spirit of St. Louis" in Paris on May 21, 1927, successfully
-
-
The Mickey Mouse comic strip debuts in the January 13, 1930, edition of the New York Mirror
-
3M employee Richard Drew invents Scotch Brand Cellulose Tape in 1930. Today, it is widely known simply as "Scotch Tape."
-
On October 17, 1931, Chicago gangster Al Capone was convicted of income tax evasion and later sentenced to 11 years in federal prison.