U.S. History: 1887-2008 By eliana.martinez Period: 1776 to 1860 Early American History Jul 4, 1776 Declaration Of Independence Sep 17, 1787 Constitution Written Dec 15, 1791 Bill of Rights ratified Period: 1860 to 1877 Civil War/Reconstruction 1864 13th Amendment abolished slavery 1868 14th Amendment citizenship and due process 1869 Transcontinental Railroad Completed 1870 15th Amendment voting for all male citizens 1876 Telephone invented by Alexander Graham Bell Period: 1877 to 1900 The Gilded Age Rockefeller/Carnegie (Captains of Industry vs. Robber Barons) Philanthropy Monopoly Jane Addams Laissez-Faire Period: 1890 to 1920 The Progressive Era Period: 1898 to 1910 Imperialism Period: 1914 to 1918 World War I Period: 1920 to 1929 Roaring Twenties Period: 1929 to 1939 Great Depression Period: 1939 to 1945 World War II Period: 1945 to 1960 Early Cold War Period: 1950 to 1970 Civil Rights Era Period: 1954 to 1976 Vietnam War Period: 1970 to 1991 End of the Cold War Period: 1990 to 2008 1990's-21st Century