Which countries made up the Triple Entente?

Which countries made up the Central Powers?

The sinking of what ship by German U-Boots is seen as a major reason why the United States joined the war.

The Zimmerman Telegram was used by Germany to attempt a coordinated attack on the United States with what nation?

What was the name of the military plan by the Germans to sweep through Belgium in order to quickly take Paris and avoid a two-front war?

The Archduke of Austria-Hungary Franz Ferdinand and his wife Sophie were murdered on 28 June 1914 by who?

In trench warfare, the area between the two opposing battle lines was referred to as what?

What is now commonly referred to as Post Traumatic Stress Disorder (PTSD), was commonly called what during the WWI era?

What was the name of the gas first used by the Germans to try and clear enemy trenches?

Who was the last Czar of Russia who was killed with his family in 1918?

The Eastern Front saw similar levels of trench warfare as on the Western Front with minimal movement after the initial offensives.

What was the treaty that officially ended WWI?

What nation lost the most lives during WWI?

What was the most common cause of death for soldiers in WWI?

President Woodrow Wilson's plan for the post war landscape was called what?

The new post-war association that was charged with maintaining world peace was called what?

What ethnic group was almost completely exterminated in the Ottoman Empire during WWI?

What was the first declaration of war in the buildup to WWI.

Which of these technological advancements did not play a role in WWI?

What was the deadliest battle of WWI?