American Imperialism By gdumelle Dec 2, 1823 Monroe Doctrine Jul 1, 1845 Manifest Destiny Jun 5, 1887 Mexico Pancho Villa Jan 17, 1893 Annexation of Hawaii Feb 15, 1898 Sinking Maine Apr 20, 1898 Teller Amendment Apr 21, 1898 Spanish American War Jun 20, 1898 Annexation of Guam Jan 1, 1899 Open Door Policy Jan 1, 1899 Annexation Samoa Nov 2, 1899 Boxer Rebellion Mar 2, 1901 Platt Amendment Feb 8, 1904 Russo Japanese War Sep 5, 1905 Treaty of Portsmouth Aug 15, 1914 Panama Canal Jan 1, 1917 Annexation of Virgin Island
