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Thomas Jefferson became the third president
https://www.britannica.com/biography/Thomas-Jefferson
Thomas Jefferson is responsible for the Louisiana Purchase. And is an early advocate of total separation of church and state, he also was the founder and architect of the University of Virginia -
Louisiana Purchase Treaty
https://www.ourdocuments.gov/doc.php?flash=false&doc=18
In this transaction with France, signed on April 30, 1803, the United States purchased 828,000 square miles of land west of the Mississippi River for $15 million. For roughly 4 cents an acre, the United States doubled its size, expanding the nation westward. -
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Lewis & Clarke Expedition
https://www.archives.gov/education/lessons/lewis-clark
"After the Louisiana Purchase Treaty was made, Jefferson initiated an exploration of the newly purchased land and the territory beyond the "great rock mountains" in the West. He chose Meriwether Lewis to lead an expedition, who in turn solicited the help of William Clark. Together they formed a diverse military Corps of Discovery that would undertake a two-year journey to the great ocean." -
Battle of Tippecanoe
https://www.nps.gov/articles/tippecanoe.htm
"The Battle of Tippecanoe fought almost a year before the formal declaration of the War of 1812, “Tippecanoe” became a rallying cry for many Americans as they denounced British support for the western Indian tribes." -
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War of 1812
https://history.state.gov/milestones/1801-1829/war-of-1812
"As an important neutral trading nation, the United States became ensnarled in the European conflict that pitted Napoleonic France against Great Britain and her continental allies." -
The Treaty of Ft. Jackson ends the Creek War
https://www.nps.gov/articles/treaty-of-fort-jackson.htm
"The Treaty of Fort Jackson ended the fighting of the Creek War, but began a series of negotiations between the Creek community and the U.S. Government for land, property, and monetary resources." -
Humphry Davy's miners' safety lamp
http://www.rigb.org/our-history/iconic-objects/iconic-objects-list/davy-lamp
"The first ever prototype of Davy’s miner’s safety lamp. Created in 1815, it was designed to be lit safely for miners to use without allowing the heat from the flame to explode the concentration of methane gas often found as miners dug deeper." -
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Battle of Alamo
https://www.tsl.texas.gov/treasures/republic/alamo-01.html
"At the Alamo in San Antonio, then called Bejar, 150 Texas rebels led by William Barret Travis made their stand against Santa Anna's vastly superior Mexican army." -
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The Trail of Tears
https://www.pbs.org/wgbh/aia/part4/4h1567.html
"In 1838 and 1839, as part of Andrew Jackson's Indian removal policy, the Cherokee nation was forced to give up its lands east of the Mississippi River and to migrate to an area in present-day Oklahoma. The Cherokee people called this journey the "Trail of Tears," because of its devastating effects. The migrants faced hunger, disease, and exhaustion on the forced march. Over 4,000 out of 15,000 of the Cherokees died." -
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Battle of Gettysburg
https://www.npr.org/templates/story/story.php?storyId=1305860
"A look back at the three-day battle of Gettysburg. The fighting between July 1, 1863 and July 3, 1863 is considered to be the bloodiest of the Civil War. The battle is also regarded a major turning point in the war that pitted the North against the South."