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| 1018077699 | Francis Ferdinand | Hapsburg archduke, heir to the throne of Austria-Hungary, assassinated in Sarajevo on June 28, 1914. A-H delivered severe ultimatum to Serbia • Serbia's refusal to accept it in entirety, led Austria Hungary to declare war on Serbia on July 28. Within a week of this declaration , all powers of Europe were engaged in the war | |
| 1018077700 | Central Powers | Austria-Hungary and Germany, joined by Turkey and later Bulgaria | |
| 1018077701 | Allies | Serbia, Russia, Great Britain, France and eventually 18 other nations | |
| 1018077702 | Triple Alliance | Germany, Austria-Hungary, and Italy | |
| 1018077703 | Triple Entente | Great Britain, France, and Russia | |
| 1018077704 | Woodrow Wilson | slogan, "he kept us out of the war" - president during WW I | |
| 1018077705 | Lusitania | a passenger boat, was sunk in May 1915 by a German submarine. People protested vehemently | |
| 1018077706 | 4 Reasons US joined WW I: | - Outrage against German subs sinking innocents - Possibility of greater profits if we entered the war - Fear that our security would be undermined if Germany won - Americans felt emotionally closer to GB than to Germany | |
| 1018077707 | Treaty of Versailles | Peace treaty that officially ended World War I in 1919 - controversial disarmament, war guilt, and reparations clauses. | |
| 1018077708 | the "Big Four" | Woodrow Wilson, David Lloyd-George, Georges Clemenceau, and Vittorio Orlando |
