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Period: to
Theodore Roosevelt becomes President
https://www.whitehouse.gov/about-the-white-house/presidents/theodore-roosevelt/
"With the assassination of President William McKinley, Theodore Roosevelt, not quite 43, became the 26th and youngest President in the Nation’s history (1901-1909). He brought new excitement and power to the office, vigorously leading Congress and the American public toward progressive reforms and strong foreign policy." -
Roosevelt Corollary to Monroe Doctrine
https://history.state.gov/milestones/1899-1913/roosevelt-and-monroe-doctrine
"The Roosevelt Corollary stated that the United States would intervene as a last resort to ensure that other nations in the Western Hemisphere fulfilled their obligations to international creditors, and did not violate the rights of the United States As the corollary worked out in practice, the United States increasingly used military force to restore internal stability to nations in the region." -
Sixteenth Amendment Authorizing Income Tax Ratified
https://www.ourdocuments.gov/doc.php?flash=false&doc=57
"Passed by Congress on July 2, 1909, and ratified February 3, 1913, the 16th amendment established Congress's right to impose a Federal income tax." -
Federal Reserve System Began
https://www.federalreserveeducation.org/about-the-fed/history
"From December 1912 to December 1913, the Glass-Willis proposal was hotly debated, molded and reshaped. By December 23, 1913, when President Woodrow Wilson signed the Federal Reserve Act into law, it stood as a classic example of compromise—a decentralized central bank that balanced the competing interests of private banks and populist sentiment." -
Period: to
World War l
https://www.history.com/topics/world-war-i/world-war-i-history
"World War I began in 1914, after the assassination of Archduke Franz Ferdinand, and lasted until 1918. During the conflict, Germany, Austria-Hungary, Bulgaria and the Ottoman Empire (the Central Powers) fought against Great Britain, France, Russia, Italy, Romania, Japan and the United States (the Allied Powers). World War I saw unprecedented levels of carnage and destruction." -
Period: to
U.S. Invasion and Occupation of Haiti
https://history.state.gov/milestones/1914-1920/haiti
"Following the assassination of the Haitian President in July of 1915, President Woodrow Wilson sent the United States Marines into Haiti to restore order and maintain political and economic stability in the Caribbean. This occupation continued until 1934." -
Eighteenth Amendment Ratification
https://www.loc.gov/rr/program/bib/ourdocs/18thamendment.html
"The 18th Amendment to the Constitution prohibited the "manufacture, sale, or transportation of intoxicating liquors..." and was ratified by the states on January 16, 1919. The movement to prohibit alcohol began in the United States in the early nineteenth century." -
Nineteenth Amendment Passed
https://www.ourdocuments.gov/doc.php?flash=false&doc=63
"Passed by Congress June 4, 1919, and ratified on August 18, 1920, the 19th amendment granted women the right to vote. Achieving this milestone required a lengthy and difficult struggle; victory took decades of agitation and protest." -
Treaty of Versailles
https://www.britannica.com/event/Treaty-of-Versailles-1919
"Treaty of Versailles, peace document signed at the end of World War I by the Allied and associated powers and by Germany in the Hall of Mirrors in the Palace of Versailles, France, on June 28, 1919; it took force on January 10, 1920."
