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| 1800 |
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The new city of Washington, D.C. becomes the United States capital. |
| Free African Americans in Philadelphia unsuccessfully petition the United States Congress to end enslavement. | ||
| A Philadelphia shoemaker is the first to design shoes especially for the right and left feet. | ||
| 1801 |
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Mastodon fossils are discovered on a New York farm, the first skeletons ever found of the extinct mammal. |
| 1802 | Gideon Putnam builds a resort hotel, one of the earliest in America, at Saratoga Springs, New York. | |
| 1803 | The United States more than doubles its size after buying over 820,000 square miles of land, known as the Louisiana Purchase, from the French government. | |
| 1804 |
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Merriwether Lewis and William Clark begin their exploration of the vast Northwest territory, traveling from the Mississippi River to the Pacific Ocean. |
| 1805 | A covered bridge, America's first, is built over the Schuylkill River near Philadelphia. | |
| 1806 |
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Zebulon Pike explores the territory that later became the American southwest, discovering Pike's Peak, the famous Colorado mountain named for him. |
| Congress authorizes improvements to the Natchez Trace, a Native American trail running from Nashville, Tennessee to Natchez, Mississippi, turning it into a road for American settlers. | ||
| 1807 |
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Robert Fulton's steamboat, the Clermont, makes its first run from New York City to Albany in 32 hours, traveling at the top speed of 5 mph. |
| 1808 | The United States prohibits the importation of Africans for enslavement. | |
| 1809 | William Maclure publishes the first detailed geological survey of the United States. |
| The Henry Ford ~ http://www.TheHenryFord.org | |