American women voted in their first presidential election in 1920 because of this Constitutional Amendment
nineteenth
The increase of organized crime in the 1920s was linked to this policy put in place by the 18th Amendment.
prohibition
The mass slaughter of Jews in Europe
the holocaust.
In 1949, this nation became the second to detonate an atomic bomb
the Soviet Union / U.S.S.R. / Russia
It began when World War II ended and ended around the time the 1990s began.
The Cold War
Barack Obama
in the 1920s it exposed the whole nation to the same information and entertainment.
the radio
Only two were used, one on Hiroshima, the other on Nagasaki.
The main reason for United States military involvement in Vietnam in the early 1960s was to stop the spread of this political and economic system.
Communism
The goal of this movement was to secure full voting rights for all people, not just men.
The Women's Suffrage Movement
This invention encouraged tourism and created new businesses in the 1920s.
the automobile
Major battle that opened the way for the Allies to enter Germany from both the east and the west.
D-Day / The invasion of Normandy
The 15 year period of increased birth rate that happened after World War II
The baby boom
A contest in which nations compete to build more and more powerful weapons.
arms race
Depicted in this cartoon, He believed good trusts must be controlled and bad trusts broken up.
Theodore Roosevelt
Franklin Roosevelt's plan to provide relief, recovery, and reform to help with the problems of the Great Depression
New Deal
British Prime Minister Winston Churchill used this term to referring to a barrier to understanding and information between Eastern and Western European nations.
iron curtain
His name has come to be associated with accusing someone of disloyalty without having any evidence.
Joseph McCarthy
He was the mastermind of the September 11th attacks.
Osama bin Laden
As a way of criticizing the federal government during the early 1930s, areas such as those shown in this photograph were often referred to by this mocking name.

hoovervilles
In a speech delivered to Congress, President Roosevelt called this even on December 7, 1941, “a date which will live in infamy.”
the Japanese attack on Pearl Harbor
This war, fought between 1950 and 1953, ended in a stalemate with neither side making any substantial territorial gain.
The Korean War
Constructed in 1903, this waterway connected the Atlantic and Pacific Oceans.
The Panama Canal
Nickname for October 29, 1929, the day the stock market crashed.
black tuesday
Even before Pearl Harbor, Congress prepared for entry into World War II by enacting one of these to increase the number of soldiers in the U.S. Army.
draft / military draft / peacetime draft
The United States policy of limiting Soviet expansion.
containment
The terrorist organization that claimed responsibility for the 9/11 attacks
Al-Qaeda
Area of the United States affected by the Dust Bowl.
plains / the great plains
A country whose military, economic, and political strength is so great that it can influence events worldwide
super power
He resigned as a result of the Watergate scandal.
Richard Nixon
He was president at the time of the September 11th attacks
George W. Bush