The man held responsible for assassinating Archduke Francis Ferdinand

Eastern front battle that the Russians could never fully recover from

The act of preparing for war

Strait where Churchill planned to use to help supply Russia

British passenger liner sunk by German U-boats killing 128 Americans

This man asked the United States congress for a declaration of war against Germany

Western front battle in which the French were able to push the Germans back 50 miles from Paris

Increasing military & naval forces

The sea that the Allies and the Central powers were "racing" to in order to out-flank one another

Plan by a German general to fight a two front war and finish the war by Christmas

The man who was fired from his position within in the British military for his failure at the Dardanelles strait

Only naval battle of WWI

Material used to influence a country's population to support the war effort

Territory that France lost to the Germans during the Franco-Prussian war

Blockade by the British navy that halted German imports

The German foreign minister who sent a telegram to Mexico, which was intercepted by British spies

German offensive in the western front along the Meuse river

All resources by a country are used for war

Where the Germans invaded to get to France, treaty was a "a scrap of paper"

Type of warfare that militaries used to protect soldiers from machine gun fire

The French commander at the battle of Verdun who is nicknamed "The Tiger" and famously yelled "They shall not pass!"

French & British offensive in the western front where the tank was first introduced

A country engaged in war

This state was created during the 2nd Balkan crisis, which infuriated Serbia

Plan by Churchill to go through the Dardanelles strait to supply Russia, defeat the Ottomans, and bring down the Austrian Empire