| A | B |
|---|
| Central Powers | Germany, Austria-Hungary, Ottoman Empire, Bulgaria |
| Allies | Britain, France, Russia, Serbia, Belgium, Italy, Japan, Montenegro and U.S. |
| Western Front | region in northern France where war was deadlocked |
| Schlieffen Plan | Germany's plan to first conquer France, then rush east to fight Russia. |
| trench warfare | armies fighting from trenches; |
| conditions in the trenches | filled with mud and rats, no fresh food, difficult to sleep |
| no man's land | space between the opposing trenches where fighting took place |
| new weapons of WW I which led to more deaths | poison gas, machine gun, tank, submarine |
| Eastern Front | site of main fighting along the German-Russian border |
| Battles of Verdun and Somme in 1916 | these battles ended with a million dead and little territory gained |
| Russian army's main asset | huge size kept it going despite shortages of food, guns, clothes |
