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   Theodore Roosevelt officially starts his term as President. Theodore Roosevelt officially starts his term as President.
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   President Roosevelt in his Annual address made a significant addition to the Monroe Doctrine. President Roosevelt in his Annual address made a significant addition to the Monroe Doctrine.
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   Woodrow Wilson officially becomes President of the United States. Woodrow Wilson officially becomes President of the United States.
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   World War 1 begins when Archduke Franz Ferdinand of Austria was killed. World War 1 begins when Archduke Franz Ferdinand of Austria was killed.
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   The Lusitania is sunk by German U-Boats and almost forces the US to join the war. The Lusitania is sunk by German U-Boats and almost forces the US to join the war.
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   The United States of America finally joins WWI. The United States of America finally joins WWI.
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   World War 1 finally ends. World War 1 finally ends.
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   The 18th Amendment is ratified by Congress. The 18th Amendment is ratified by Congress.
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   The 19th Amendment which gave women the right to vote is ratified. The 19th Amendment which gave women the right to vote is ratified.