US History 1877-present By synnevelevos Period: 1877 to 1900 Gilded Age Beginning of populism, rise of robber barons, the closing of the frontier, urbanization and industrialization. Period: 1900 to 1920 Progressive Era Period: 1900 to 1918 Expansionism Period: 1920 to 1929 Roaring 20s Period: 1929 to 1941 Great Depression Period: 1939 to 1945 WWII Dec 7, 1941 Pearl Harbor Attack Period: 1945 to 1990 Cold War Period: 1955 to 1965 Civil Rights Movement 1963 JFK assassinated Period: 1970 to 2018 Present Day
