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1. Archduke Franz Ferdinand: This was the spark that started World War I. The Austrian crown prince, was
murdered on June 28, 1914, by a Serbian nationalist while visiting Sarajevo, Bosnia. Germany urged Austria-Hungary
to fight and they went to war against Serbia
2. Woodrow Wilson: This was the president who was elected in 1912, and led the US into WWI. Later wrote a
plan for post-WWI peace known as the Fourteen Points.
3. Austria-Hungary: This Central Power empire during WWI, started the war with their invasion of Serbia after
the assassination of Archduke Ferdinand on June 28, 1914 . It was made up of Austria, Hungary and several other
nations and territories. After World War I it split up into several nations.
4. U-boats: This new machinery used by the Germans in sea warfare, to attack British and American supply ships
in the North Sea and the Atlantic Ocean.
5. Nationalism: This cause of World War I was based on an intense pride in one's nation.
6. Wilson's Fourteen Points: This is the plan for post-World War I outlined by President Wilson in 1918.
This plan called for self-determination (countries in Africa and Asia govern themselves), freedom of the seas, free trade,
end to secret agreements, reduction of arms and a league of nations.
7. Zimmerman Telegram: This intercepted note from the German foreign minister to the Mexican govern-
ment offered, territories in Texas, Arizona and New Mexico for Mexico. The note also confirmed the new policy of
unrestricted submarine warfare by Germany against the Allied Powers. This helped turn Americans against Germany
in WWI.
8. Lusitania: This British passenger ship was sunk by German U-boats in 1915, carrying civilians and ammunition
to Britain from the U.S. The event turned American opinion against Germany.
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