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Archduke Franz Ferdinand assassinated
The assassination of Archduke Franz Ferdinand of Austria-Hungary in 1914 led the United States to remain neutral until 1917. However, the US did supply war materials to its allies, including Britain and Russia. -
great Britain declares war on germany
The United States had a number of factors that influenced its entry into World War I submarine warfare -
A German U-Boat torpedoes the British passenger liner Lusitania
Lusitania, British ocean liner, the sinking of which by a German U-boat on May 7, 1915, contributed indirectly to the entry of the United States into World War I. -
Presidential elections
Presidential elections were held in the United States on November 7, 1916. Incumbent Democratic President Woodrow Wilson narrowly defeated former associate justice of the Supreme Court Charles Evans Hughes, the Republican candidate. Presidential election results map. -
A blast at a munitions factory in London killed 73 and injured over 400 workers
On January 19, 1917, British intelligence intercepted and decoded a secret telegram sent by German Foreign Minister Arthur Zimmermann to the German ambassador in Mexico, known as the "Zimmermann Telegram"; this message proposed an alliance between Germany and Mexico, promising to help Mexico reclaim territory lost to the US in exchange for Mexican support in World War I, significantly pushing the United States closer to entering the war against Germany -
the United States declared war on the German Empire, joining France, Great Britain, Russia, Canada, Australia, New Zealand, South Africa and Italy.
the U.S. went into war to protect shipping and the freedeom of trade while in international waters. -
British advance on Souchez river continues.
The United States later declared war on German ally Austria-Hungary on December 7, 1917. Germany's resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilson's decision to lead the United States into World War I. -
The Sedition Act of 1918
On May 16, 1918, President Woodrow Wilson signed the Sedition Act of 1918 into law, which amended the Espionage Act of 1917. The Sedition Act made it illegal to speak out against the government or the war effort in a number of ways, including -
On May 16, 1918, President Woodrow Wilson signed the Sedition Act of 1918 into law, which amended the Espionage Act of 1917. The Sedition Act made it illegal to speak out against the government or the war effort in a number of ways, including
The signing of the Armistice on November 11th became a national holiday in the United States to honor those who served in the First World War, and helped bring it to a close -
The Versailles Peace Treaty, signed on June 28, 1919, officially ended World War I
National Museum of the U.S. Navy
The Versailles Peace Treaty, signed on June 28, 1919, officially ended World War I. Of note, on the same day, five-years earlier the Archduke Franz Ferdinand of Austria was assassinated at Sarajevo, Bosnia, starting the war.