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Progressive Era
World War I
Imperialism
Big Business
Reconstruction
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

A war fought between the US and Spain in Cuba and the Philippines.

Spanish-American War

100

The king of the Oil Industry during the Industrial Revolution.

John Rockefeller

100

These amendments made all people born in the US a citizen and gave them the right to Vote.

the 14th and 15th

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 first examples of US imperialism were seen in Puerto Rico, Cuba, and 

Philippines

200

This act was meant to limit the power of trusts from forming monopolies

Sherman Antitrust Act 

200

The 13th amendment was passed to...

abolish slavery

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

The USS Maine was sunk because...

an accidental explosion aboard the ship

300

An example of political corruption at the state and local level who exchanged favors for votes.

Political Machines

300

The Supreme Court case that made segregation legal in the United States.

Plessy v. Ferguson

400
This US president helped to create the Panama Canal, was known as being a trust buster and a conservationist.  
Teddy Roosevelt
400
Great Britain, France and Italy.  We entered the war with the intention of helping them.  
The Allied Powers
400

Legislation that severely restricted Cuba's sovereignty and gave the US the right to intervene if Cuba got into trouble.

The Platt Amendment

400

An example of the justification of wealth created by a small group of people despite the majority of people living in poverty.

Social Darwinism or Gospel of Wealth

400

These laws were passed in the South during Reconstruction in order to limit the freedom and opportunities for former slaves

Black Codes

500
This person was jailed during the Pullman Strike, and founded the Socialist Party. 
Eugene V. Debs
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

Legislation that promised the US would not annex Cuba after ridding Cuba of Spanish misrule in the Spanish-American War.

Teller Amendment
500

Idea that the less the government is involved in the economy, the better off business will be, and by extension, society as a whole.

laisse-faire 

500

The political group who wanted to impeach President Andrew Johnson and pushed for military occupation of the South.

Radical Republicans