Archduke whose murder was responsible for WWI

President of the US during WWI

THIS COUNTRY made an effort to hold talks with Serbia and Austria-Hungary in the interest of peace

THIS COUNTRY invaded neutral Belgium and declared war on France

Of all of the new weapons that were available during WWI, THESE are the weapon that caused the US to join the Allies when Germany used them irresponsibly.

Emperor of Austria-Hungary at the beginning of WWI

American commanding general in Europe during WWI

THIS COUNTRY was part of the Triple Alliance and declared war on Russia when Russia refused to stop massing troops on the border

THIS COUNTRY came to the aid of Belgium

THIS turned the tide of the War against Germany

Kaiser of Germany during WWI

Creator of the modern nation of Turkey after WWI

THIS COUNTRY was Russia's ally in western Europe

THIS COUNTRY refused to stop massing troops on their border with Germany

THIS was the result of the Versailles Peace Conference

Pope during WWI

WWI began when THIS COUNTRY received an ultimatum requiring it to comply with a series of harsh demands

THIS COUNTRY, hoping to gain land by ending up on the winning side, later joined the Allies

THIS EMPIRE joined the Central Powers early in the war

The years that WWI began and ended.

Tsar of Russia during WWI

THIS COUNTRY issued an ultimatum to Serbia and declared war on them.

THIS COUNTRY, halfway around the world, joined the Allies

The actual fighting in WWI broke out when THIS happened

This is why Russia lost land to Germany in 1918