-
Period: to
Early American History
-
Period: to
Civil War/Reconstruction
-
Period: to
The Gilded Age
-
Period: to
The Progressive Era
-
Period: to
Imperialism
-
Period: to
World War I
-
Period: to
Roaring 20s
-
Period: to
Great Depression
-
Period: to
World War II
-
United Nations Formed
-
Period: to
Early Cold War
-
Truman Doctrine
U.S. policy that gave military and economic aid to countries run by other Communist countries -
22nd Amendment
Prohibits anyone who has been elected president twice from being elected again -
Berlin Airlift
-
Marshall Plan
Plan to help European countries rebuild after WWII -
NATO established
-
Korean War begins
-
Period: to
Civil Rights Era
-
Rosenbergs Trial
-
First H-Bomb Detonated by United States
-
Korean War ends
-
Period: to
Vietnam War
-
Jonas Salk Invents the Polio Vaccine
-
USSR Launches Sputnik
-
Period: to
End of the Cold War
-
Period: to
1990s-21st Century