1.1 | American Imperialism By mrtor 1823 Monroe Doctrine 1854 Treaty of Kanagawa 1867 US Purchases Alaska from Russia 1898 US Wins Spanish-American War 1898 Hawaii Annexed 1898 US Congress Proclaimed Cuba Independent 1898 Turning Point in American History The US defeated a European nation, shows its navy was powerful, and acquired its own empire. 1899 Germany and US Divide Samoan Islands 1899 Boxer Rebellion 1899 Philippines Troops Attack American Soldiers 1900 Foraker Act 1903 Panama Became Independent 1903 Platt Amendment 1914 US Forced Ordered to Intervene in Mexico 1916 US Troops Sent into Dominican Republic to Set up a Government 1916 Burning Down of Columbus, New Mexico by a Group of Guerrillas