Period 7 By benab01 1890 Mahan's Idea for a navy Period: 1895 to 1898 Spanish American War 1897 McKinley makes Hawaii a territory 1898 USS Maine sinks in Havana 1898 The US gives Cuba Independence 1899 Open Door Policy Period: 1899 to 1902 Philippine-American War America Wins and takes the Philippines 1903 US Begins Panama Canal. 1904 Big Stick Diplomacy Continuation of Monroe Doctorine 1914 Panama Canal Opens Period: 1914 to 1918 Archduke gets killed, WW1 begins 1915 Germans sink the Lusitania 1917 Espionage Act 1917 America Declares War on Germany 1918 The Sedition Act 1919 The RedScare 1919 The 18th Amendment is ratified 1920 The 19th Amendment is ratified