| 1889 |
- Jane Addams opens Hull House.
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| 1896 |
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| 1900 |
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| 1901 |
- William McKinley assassinated; Theodore Roosevelt becomes president.
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| 1902 |
- Antitrust lawsuit filed against Northern Securities Company.
- Roosevelt mediates anthracite coal strike.
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| 1903 |
- Women’s Trade Union League founded.
- Panama Canal construction begins.
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| 1904 |
- Roosevelt Corollary to Monroe Doctrine.
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| 1905 |
- Industrial Workers of the World founded.
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| 1906 |
- Pure Food and Drug Act and Meat Inspection Act.
- Atlanta race riot.
- Hepburn Act.
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| 1907 |
- Panic on Wall Street.
- “Gentlemen’s Agreement” with Japan.
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| 1908 |
- Muller v. Oregon.
- William Howard Taft elected president.
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| 1909 |
- Garment workers’ strike.
- National Association for the Advancement of Colored People formed.
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| 1911 |
- Triangle Shirtwaist Company fire.
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| 1912 |
- Roosevelt runs for president on Progressive Party ticket.
- Woodrow Wilson elected president.
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| 1913 |
- Suffragists march in Washington, D.C.
- Federal Reserve Act.
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| 1914 |
- Federal Trade Commission created.
- Clayton Antitrust Act.
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| 1916 |
- Margaret Sanger opens first U.S. birth control clinic.
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