| A | B |
|---|
| British passenger ship that was torpedoed by a German submarine on May 7, 1915, killing 1,200 passengers, including 139 Americans | Lusitania |
| Town in northeastern France on the Meuse River, scene of several battles during World War I | Verdun |
| British representative at the peace treaty that ended World War I | David Lloyd George |
| Nickname of a German cannon that hurled an 1800 pound shell a distance of nine miles, named after the wife of Gustav Krupp, the German munitions manufacturer | Big Bertha |
| Nickname of aerial battles during World War | dogfights |
| Russian ruler during World War I, executed by revolutionaries in 1917 | Czar Nicholas |
| French general, commander in chief of the Allied armies during World War I | Jacques Joffe |
| Name given to the battle lines between France and Germany during World War I | Western Front |
| African-American soldier who was awarded the Croix de Guerre, a high military honor from the French government | Needham Roberts |
| British king during World War I | George |
| Popular American song during World War I | Over There |
| Grim nickname given to the area between the trenches that were dug during World War I | no man's land |
| U.S. naval leader during World War I who devised the convoy system to protect merchant ships crossing the Atlantic | William Sims |
| Emperor of Austria during World War I | Franz Josef |
| Village in northeastern Poland, scene of a major Russian defeat by German forces in August 1914 | Tannenberg |
| Germany's foreign secretary who attempted to persuade Mexico to join the war on the German side in exchange for Germany's help to get back Mexico's lost land in Texas and Arizona | Arthur Zimmermann |
| Serbian nationalist who assassinated the archduke and archduchess of Austria on June 28, 1914 | Gavrilo Princip |
| Name given to Germany and Austria-Hungary during World War I because of their geographic location in the heart of Europe | Central Powers |
| French passenger ship that was torpedoed by a German submarine in March 1916 | Sussex |
| River in northeastern France, scene of a decisive battle where the French army stopped the German advance toward Paris on September 12, 1914 | Marne |
| Location of the assassination of the archduke of Austria on June 28, 1914 | Sarajevo |
