| A | B |
| Triple Alliance of 1882 | Germany, Austria-Hungary, Italy |
| Triple Entente of 1907 | France, Britain, Russia |
| Congress of Berlin | Romania, Serbia, Montenegro are independent |
| Balkan League | Greece, Serbia, Bulgaria, Montenegro |
| Brinkmanship | Use threat of going to war to achieve what you want from someone else |
| Conscription | Draft |
| June 28, 1914 | Assassination of Franz Ferdinand and wife |
| Gavarillo Princip | Member of the Society of the Black Hand |
| July 28, 1914 | Austria-Hungary declares war on Serbia |
| August 1, 1914 | Germany declares war on Russia |
| August 3, 1914 | Germany declares war on Belgium & France |
| August 4, 1914 | Britain declares war on Germany |
| Schlieffen Plan | German plan to encircle Paris and trap the French Army |
| September 6-10,1914 | First Battle of the Marne, Germans halted |
| Trench Warfare | Stalemate that erupted after no one side gained an advantage |
| No Man's Land | Area between opposing trenches where nothing survived for very long |
| Lawrence of Arabia | British officer who convinced Arab princes to help overthrow the Ottoman Empire |
| April 6, 1917 | USA enters the war on the side of the allies |
| May 7, 1915 | Lusitania sunk |
| Zimmerman Telegram | German message to Mexico asking for help if war with USA ensued |
| Treaty of Brest-Litvosk | Removed Russia from the war |
| August 7-September 1, 1914 | Battle of Tannenberg |
| February 21-December 6, 1916 | Battle of Verdun |
| May 31-June 1, 1916 | Battle of Jutland |
| July 1-November 19, 1916 | Battle of the Somme |
| July 15-August 4, 1918 | Second Battle of the Marne |
| Kiel Mutiny | 11/3/1918, German soldiers and sailors refuse to fight for current regime |
| Kaiser William II abdicates | November 9, 1918 |
| Germany signs armistice | November 11, 1918 |
| Treaty of Versailles | Peace treaty signed by Germany and Big Four on 6/28/1919 |
| Terms of treaty | Make reparations, war guilt clause, give up land |
| Wilson's 14 Points | Plan to keep peace in Europe after the war |
| Nicholas II | Tsar of Russia |
| Rasputin | Siberian "priest" who influenced policies in Russia |
| Duma | Russian legislature |
| Alexander Kerensky | Leader of Provisional Russian Government |
| Lenin | Leader of the Bolsheviks |
| July 16, 1918 | Tsar and family executed |
| Soviets | Counsils composed of deputies from the workers and soldiers |
| Leon Trotsky | Commissar of War who created the Red Army |
| War Communism | Government seizure of all banks, industries and food supplies to ensure the strength of the Red Army |
| Cheka | Russian secret police |