US history 1887-2008 By Brinley O'Neall Period: 1776 to 1860 Early American History Period: 1860 to 1887 civil war/reconstruction Period: 1877 to 1900 the gilded age Period: 1890 to 1920 the progressive era Period: 1898 to 1920 imperialism Period: 1914 to 1918 world war 1 Period: 1920 to 1929 roaring twenties Period: 1929 to 1939 great depression Period: 1939 to 1945 world war 2 Period: 1945 to 1960 early cold war Period: 1950 to 1970 civil rights era Period: 1954 to 1976 Vietnam war Period: 1970 to 1970 kent state university shootong Period: 1970 to 1991 end of the cold war Period: 1974 to 1974 watergate scandal which leads to nixons resignation Period: 1978 to 1978 camp david accords Period: 1979 to 1981 iran hostage crisis Period: 1979 to 1979 three mile island disaster Period: 1985 to 1987 iran contra affair Period: 1990 to 2008 1990s-21st century