M.A.I.N. Causes
Trench Warfare
U.S. Entry
The Homefront
Civil Liberties
100

The buildup of armies and navies and the glorification of military strength before the war.

Militarism

100

A painful infection caused by wet, unsanitary trench conditions.

Trench foot

100

German submarines used to sink ships.

What are U-boats

100

A government agency that coordinated industrial production for the war.

the War Industries Board

100

A law that made interfering with the draft or aiding the enemy illegal.


the Espionage Act

200

An alliance between Britain, France, and Russia.

the Triple Entente

200

They could fire hundreds of rounds per minute, making frontal attacks deadly.

machine guns

200

A British passenger ship sunk by Germany in 1915, killing 128 Americans.

the Lusitania

200

A government agency that produced propaganda to gain support for the war.

the Committee on Public Information

200

A law that made criticizing the government or war effort illegal

the Sedition Act

300

He was assassinated by a Serbian nationalist in June 1914, triggering Austria-Hungary to declare war on Serbia.

Archduke Franz Ferdinand

300

Psychological trauma from constant bombardment and stress.

shell shock (PTSD)

300

A secret German message proposing an alliance with Mexico if the U.S. entered the war.

the Zimmermann Telegram

300

The movement of African Americans from the South to Northern cities for factory jobs.

the Great Migration

300

A Supreme Court case that upheld limits on speech during wartime under the “clear and present danger” standard.

Schenck v. United States

400

Strong pride and loyalty to one’s nation; in Serbia it fueled support for independence from Austria-Hungary.

What is Nationalism

400

A deadlock where neither side could gain significant ground.

stalemate

400

Germany’s policy of attacking ships without warning, including neutral ships.

unrestricted submarine warfare

400

Gardens grown by civilians to conserve food for soldiers.

Victory Gardens

400

An Amendment that was restricted during WWI.

freedom of speech

500

An example of this would be: America in Hawaii, America in Alaska, and rivalries in Africa.

Imperialism

500

This area between opposing trenches was filled with barbed wire, craters, and machine gun fire, making attacks extremely deadly.

No Man’s Land

500

In 1917, Germany resumed this naval policy, which directly threatened American ships and pushed the U.S. closer to war.

unrestricted submarine warfare

500

This government agency, led by Herbert Hoover, encouraged rationing and promoted “Meatless Mondays” and “Wheatless Wednesdays.

the Food Administration

500

In Schenck v. United States, Justice Oliver Wendell Holmes argued that speech could be limited if it created this.

“clear and present danger”