Progressive Era
World War I
The 1920s
The 1930s
World War II
100
Upton Sinclair was the muckraker who wrote this book which exposed the meatpacking industry and the troubles associated with it.  

The Jungle

100
The movement of approximately 6 million African Americans from the rural South to the urban Northeast, Midwest and West in the late 19th to mid 20th Centuries.  
The Great Migration
100
The trial of a high school teacher in Tennessee for teaching the theory of evolution in violation of state law.  The teacher was found guilty and the trial was closely followed by the public.    
The Scopes "Monkey" Trial
100

The end of 1929 ushered in this event, marked with high unemployment and homelessness 

The Great Depression

100
Japan bombed this US naval and air force base.  The US responded by declaring war on Japan and officially entering WWI on the side of the Allies.
Pearl Harbor
200
Civil Rights leader known for encouraging the African American community to "cast down their buckets" in his "Atlanta Compromise" Speech.
Booker T Washington
200
The British passenger ship destroyed by a German u-boat submarine.  This event contributed to Americans wanting to get involved in WWI.  
The Lusitania
200

The banning of the sale of alcohol 

Prohibition 

200
The informal radio talks President FDR had with Americans during the Great Depression
Fireside Chats
200
Symbol of the American female factory worker who went to work during WWII.  
Rosie the Riveter
300
This Progressive Era reformer opened the Hull House in Chicago to provide social services to immigrants.  
Jane Addams
300
The discovery of this disclosed Germany's promise to help Mexico attack the US if the US declared war on Germany.
Zimmerman Telegram
300
This was triggered by the Bolshevik Revolution in Russia.  Americans were very paranoid and scared that Communism would overtake America.  
The Red Scare
300

This was FDR's agenda title, meant to eliminate the Great Depression. Bonus points: What were the 3 R's

The New Deal (Relief, Recovery, Reform)

300
The name given to the creation of the atomic bombs that were dropped in Hiroshima and Nagasaki 
The Manhattan Project
400
This US president helped to create the Panama Canal, was known as being a trust buster and a conservationist.  
Teddy Roosevelt
400

The Treaty of Versailles led to four main problems for Germany that would help lead to World War II with the rise of Hitler. What were 2 of them?

Germany was blamed, they had to pay heavy fines, they had to reduce their army, and they lost land. 
400
This leader during the Harlem Renaissance encouraged a modern "Back to Africa" movement and founded the Universal Negro Improvement Association (UNIA).  
Marcus Garvey
400
This employed about 3 million men to work on projects that benefitted the public.  Was a part of FDR's New Deal.  
Civilian Conservation Corps
400

Efforts by African Americans during the war to fight for the country and reduce racism on the Homefront 

The Double V Campaign

500

Supreme Court case that limited women's working hours. It kept women from being exploited, but the ruling was mainly based on viewing women as solely mothers. 

Muller v Oregon

500
This Supreme Court decision declared that the federal government could limit the 1st Amendment right of "freedom of speech" in time of war and if there was a "clear and present danger."
Schenck v. US
500

The 1920s saw the second wave of this group, this time in more parts of the country

The KKK

500
Most important law passed during the New Deal.  Provides help to the elderly, unemployed, disabled.  Changed the role of the federal government to where the government is now expected to help those in need.  
Social Security Act
500
Provided WWII veterans with low interest mortgages, college tuition, and vocational training.  
GI Bill