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The cotton gin was patented 1794. This was an invention that cleaned cotton 50 times faster than a person could. It was a big part of the Industrial Revolution.
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Thomas Jefferson hired Meriwether Lewis and William Clark to lead an expedition where they explored the west. They were the first major expedition to reach the Pacific Ocean.
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Francis Cabot Lowell created the first factory system. This started the Industrial Revolution. These mills produced mass amounts of textiles.
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The Trail of Tears was the removal of the Cherokee tribe. They were forcibly removed by Andrew Jackson's orders. Many Cherokee men, women, and children died along the trail.
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On this day James Marshall was working on the mill when he discovered gold. When people found out there was gold there it started the California Gold Rush.
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The signing of this treaty ended the Mexican-American War in Ameirca's favor. The war lasted for about two years. After the treaty was signed we gained Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming.