| A | B |
| Czar (tsar) Nicholas II | Final Russian tsar, forced to abdicate following the Russian Revolution of 1917 |
| Kaiser Wilhelm II | German, wanted strong military, forced to abdicate towards end of war |
| Georges Clemenceau | French Premier from 1917-1920, early advocate for rearming France to protect against Germany |
| David Lloyd George | British Prime Minister during WWI, advocated stronger military to protect against Germany, advocated for the convoy method of shipping, upset by the German invasion of Belgium |
| Winston Churchill | Fought for the British in the trenches during WWI, persuaded the Belgians to hold on longer vs the Germans, supported technological advances in aviation and tanks. |
| Woodrow Wilson | President United States during WWI, wanted neutrality, joined war after Germany's attacks on American ships, 14 Points of Light |
| Vladimir Lenin | Russian Revolutionist, follower of Marx, led the Bolshevik Party, would head the Soviet State |
| Franz Joseph | Longest reigning emperor of Austria-Hungary, ultimatum to Serbia would lead to WWI |
| Archduke Ferdinand | Heir apparent to Franz Joseph, assassinated by Serbian nationalist along with his wife sparking events leading to WWI |
| Gavrilo Princip | Serbian nationalist that would spark events to start WWI with his assassination of Archduke Ferdinand |
| Western Front | Battlefront where British and French forces fought Germany's armies |
| Germany and Austria-Hungary alliance | Central Powers |
| British, French and Russian Alliance | Allied Powers |
| Zimmerman Telegram | Attempt by Germany to use Mexico in order to attack the U.S. |
| Sudetenland | Three million Germans lived there, would become Czechoslovakia |
| Militarism | Glorifying military strength |
| Ultimatum | Final demand if not met means end of negotiations |
| Mobilize | Position army for war |
| Rationing | Limiting amounts of goods that can be used in a time of shortage |
| Propaganda | One-sided information to convince people |
| Abdicate | Resignation as a ruler |
| Armistice | Agreement to stop fighting |
| Mandate | Territory administered on behalf of League of Nations |
| Reparations | Money from a defeated country to pay for war damage |