Social Studies By macisnotonfire_ Mar 30, 1867 Seward purchases Alaska Nov 18, 1889 Sinking of the USS Maine Jan 17, 1893 Annexation of Hawaii Nov 3, 1896 1896 US Election Apr 25, 1898 U.S Declares war on Spain May 1, 1898 Battle of Manila Bay Jul 1, 1898 Battle of San Juan Hill Aug 1, 1898 Spanish-American War Ends Feb 4, 1899 Philippine-American War Sep 6, 1899 Open Door Policy Nov 2, 1899 Boxer Rebellion Start date Apr 12, 1900 Foracker Act Mar 2, 1901 Platt Amendment Sep 7, 1901 Boxer Rebellion End Date Sep 14, 1901 Assassination of President McKinley Jan 1, 1903 Panama Canal Start Date Jan 1, 1904 US conquest of the Samoa Islands Jan 1, 1914 Panama Canal end date