Period 1 1491- columbian exchange
Period 2 1607- jamestown
Period 3 1754- 7 years war
1775-1783- Revolutionary war
Period 4 1800- election of 1800
Period 5 1848- mexican american war to 1877- end of reconstruction
1861-1865- civil war
Period 6 1865- gilded age/industrilazation
Period 7 1898- spanish american war sparked from things like anexation of
hawaii
World War I: 1914–1918 (U.S. entered in 1917)
Great Depression: 1929–late 1930s (peaked in early 1930s)
World War II: 1939–1945 (U.S. entered in 1941)
Period 8 1945- end of WWII
Period 9 1980- Reagans election
