Causes
Military
Russian Revolution
America's Involvement
End of the War/Aftermath
100
The assassination of THIS Archduke was the spark that lit the powder keg and directly caused the beginning of the war.

Who is Franz Ferdinand?

100

This is the nickname that was given to American soldiers upon arrival in Europe, named after their uniforms.

What is Doughboys?

100

This was the year of the Russia Revolution

What is 1917?

100

This passenger ship, with 128 Americans on board, was sunk by the Germans, and was one of the main causes for America becoming involved in WW1.

What is the Lusitania? 

100

This treaty was the official end of WW1

What is the Treaty of Versailles?

200

The radical nationalist group is responsible for assassinating the Archduke.

Who is the Black Hand?

200

This is the German name for Submarine.

What is U-Boats (unterseeboot)?

200

This is the political ideology that the Russian people adopted after the revolution, the first of its kind in the world.

What is Communism?

200

This was America's stance on the war in the very beginning.

What is neutral?

200

This is another name for a truce, which also became a holiday

What is armistice?

300

This term means when a country increases their power and wealth by bringing additional territories under their control.

What is imperialism?

300

This was a method of transport the American Navy developed, involving heavy guard of destroyers escorting merchant ships back and forth across Atlantic in groups

What is a convoy system?

300
This man is commonly referred to as the leader of the Bolsheviks, starting the revolution. 

Who is Vladimir Lenin?

300

This was a secret telegram from German foreign minister to the German ambassador in Mexico encouraging Mexico to invade the US

What is The Zimmerman Note?
300

President Wilson proposed this to be created during the peace conference

What is the League of Nations?
400

These three countries made up the Triple Entente, or the Allied Powers (hint-at the beginning of the war)

Who are France, Russia, and Great Britain?
400

This was the name for Germany's war plan/strategy.

What is the Schlieffen Plan?

400

This was the leader of Russia prior to the revolution, whose family had ruled the country for 300 years?

Czar Nicholas II

400

This was passed by Congress in 1917, requiring men to register with the government in order to be randomly selected for military service.

What is the Selective Service Act?

400

The empire would effectively no longer exist according to the end of the war treaty

What is the Ottoman Empire?

500

These three countries made up the Triple Alliance, or Central Powers

Who are Germany, Austria-Hungary, and Italy?

500

This battle between Allied and Central Powers in 1916, with more than 1 million soldiers either dead or wounded combined, would become known as one of the deadliest battles in human history.

What is the battle of the Somme?

500

This man's writing is what inspired Bolshevik leaders to rebel and stage the revolution

Who is Karl Marx?

500

He was the leader of the American troops, the American Expeditionary Force, in WW1.

Who is General John J. Pershing?

500

This treaty effectively ended the Russia's involvement in the war

What is the Treaty of Brest-Litovsk?