US History 1887-2008 By cole.strickland Period: 1776 to 1860 Early American History Period: 1860 to 1877 Civil War/Reconstruction Period: 1877 to 1900 The Guilded Age Period: 1890 to 1920 The Progressive Era Period: 1898 to 1910 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 1945 United Nations Formed Period: 1945 to 1960 Early Cold War 1947 truman doctorine 1947 22nd amendment 1948 Berlin Airlift 1948 marshall plan 1949 NATO established 1950 Korean War Period: 1950 to 1970 Civil Rights Era 1951 Rosenburg Trial 1952 First Hbomb exploded by United States Period: 1954 to 1976 Vietnam War 1962 cuban missile crisis 1964 gulf of tongan reslolution 1965 medicare and medicade established 1968 tet offensive 1969 Tinker v. Des Moines Period: 1970 to 1991 End of the Cold War 1971 pentagon papers leaked 1971 26th amendment 1973 war powers act 1975 fall of saigon, end of war Period: 1990 to 2008 90s and 21st Century