1900-1920 By bradleyharris 1900 City Living 30 million people lived in cities 1901 Theodore Roosevelt becomes president Period: 1904 to 1914 Panama Canal 1912 Woodrow Wilson becomes president 1913 16th and 17th Amendment added to the Amendments list Period: 1914 to 1918 World War I 1917 U.S. enters war 1919 18th Amendment prohibits alcoholic beverage 1920 19th Amendments women are allowed to vote