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McKinley is inaugurated as the president of the United States.
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Leon Czolgosz shoots president McKinley and he later dies.
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The United States signs a treaty to obtain the Panama Canal Zone.
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In North Carolina, Wright brothers conduct the first continuous flight in a machine that is heavier than air.
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Roosevelt is inaugurated for the second time.
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Woodrow Wilson is inaugurated as the 28th president of the United States of America.
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The 17th amendment is approved allowing U.S. senators to be elected by popular vote instead of the state legislatures.
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The United States declares war on Germany formally joining the first world war.
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The League of Nations have their first meeting. The United States does not attend.
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The 19th amendment is approved by Congress and women are given suffrage. They now have the right to vote.