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| 13572414615 | technology | helped shape how WWI was fought | 0 | |
| 13572414616 | trenches | open land; barbed wire and mines | 1 | |
| 13572414617 | airplanes | "cool people"; used to make maps | 2 | |
| 13572414618 | Red Baron | flying ace; shot down 83 planes | 3 | |
| 13572414619 | zeppelin | Germans used them to bomb cities and hide in the clouds | 4 | |
| 13572414620 | Battleships | powerful weapon; USS Texas and New York | 5 | |
| 13572414621 | Submarines (U-boats) | politely asked to sink boats; ships that traveled underwater, German U-boats attacked British ships and sank the Lusitania | 6 | |
| 13572414622 | Causes of WWI | Militarism, Alliances, Imperialism, Nationalism | 7 | |
| 13572414623 | Allies | Britain, France, and Russia- Later joined by Italy | 8 | |
| 13572414624 | Spark of WWI | (1914) the assassination of the Austro-Hungarian archduke, Francis Ferdinand, in June 1914 | 9 | |
| 13572414625 | Russia declares war on Austria | Serbia is blamed for death of archduke | 10 | |
| 13572414626 | Battle of Marne | (1914) A major French victory against the invading German army; stalemate between Russia and Germany | 11 | |
| 13572414627 | Rape of Belgium | (1914) neutrality violated against their will by Germany | 12 | |
| 13572414628 | Battle of Tannenberg | (1914) a German victory against the Russian, the Russians were crushed; Ottoman Turks join central power | 13 | |
| 13572414629 | Firsts | (1915) Zeppelin air raid on London; use of poison gas; submarine warfare | 14 | |
| 13572414630 | Lusitania | (1915) British passenger ship shot by Germans with one torpedo; sunk in 10 minutes because ammunition hiding | 15 | |
| 13572414631 | Carranza | represented central power of the elite | 16 | |
| 13572414632 | Zapata | Revolutionary Leader in Mexico during the Mexican Revolution who originated from the lower classes and was especially appealing to the peasants because he wanted to take land from the haciendas and return it to them. | 17 | |
| 13572414633 | Pancho Villa | (1910) attacked America to get us to follow him; we gained experience with airplanes and war | 18 | |
| 13572414634 | Battle of Verdun | (1916) German assault on Western Front | 19 | |
| 13572414635 | Battle of Jutland | (1916) British defeat German fleet in North Sea | 20 | |
| 13572414636 | Rasputin | Self-proclaimed holy man who claimed to heal the sick and have prophecy; key advisor to the Tsar | 21 | |
| 13572414637 | Bolsheviks | A party of revolutionary Marxists, led by Vladimir Lenin, who seized power in Russia in 1917. | 22 | |
| 13572414638 | Treaty of Brest-Litovsk | (1918) ended the war between Russia and Germany | 23 | |
| 13572414639 | Zimmerman Note | (1917) Germany sent this to Mexico instructing an ambassador to convince Mexico to go to war with the US; intercepted by Britain and given to the US | 24 | |
| 13572414640 | Allied Propaganda | made all of Germany's invasions seem more brutal than it was; emotions of fear and patriotism to sway people's opinion | 25 | |
| 13572414641 | Belleau Wood | (1918) Americans help stop German offense; Sergeant Alvin York | 26 | |
| 13572414642 | St. Mihiel | (1918) A battle led by the American troops and caught the Germans off guard | 27 | |
| 13572414643 | Cher Ami | pigeon who basically saved American unit from Germans; died on battlefield and later put in Smithsonian Museum | 28 | |
| 13572414644 | Armistice Day | November 11, 1918; Germany signed an agreement to stop fighting; signed by a railroad boxcar that French take to boast about winning | 29 | |
| 13572414645 | Progressive Movement | aimed to restore economic opportunities and correct injustices in American life; solved everything with laws | 30 | |
| 13572414646 | Woodrow Wilson | wrote 14 points to create lasting peace and avoid future wars | 31 | |
| 13572414647 | 14 points | Treaties; freedom of seas; no trade barriers; arms; colonial people; map of Europe; League of Nations | 32 | |
| 13572414648 | League of Nations | an international organization formed in 1920 to promote cooperation and peace among nations; US did not end up joining | 33 | |
| 13572414649 | Black Hand | Serbian rebel group who assassinated Archduke Ferdinand after several failed attempts | 34 | |
| 13572414650 | Kaiser Wilhelm II | leader of German army; forced to step down by German generals | 35 |
