American Imperialism By josh016 Period: Jan 1, 1890 to Dec 31, 1920 American Imperialism Oct 17, 1893 Buisness groups aided by US marines over throw Hawaiis Queen Liliuokalani Apr 6, 1895 Guglielmo Marconi develops that technology that led to the modern radio Apr 20, 1898 U.S.S Maine explodes and sinks. The Spanish-American War begins Oct 17, 1901 Theodore Roosevelt becomes president after Mckinley is assassinated Sep 23, 1903 Panama declares its independence from Colombia Jan 10, 1908 William Howard Taft is elected president Nov 6, 1910 The Mexican Revolution begins Jan 1, 1912 Woodrow Wilson is elected President Aug 3, 1914 World War 1 Begins in Europe Jun 19, 1917 Puerto Ricans become US citizens Aug 12, 1917 The US enters WW1