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By issuing the Declaration of Independence, adopted by the Continental Congress on July 4, 1776, the 13 American colonies severed their political connections to Great Britain. The Declaration summarized the colonists’ motivations for seeking independence. By declaring themselves an independent nation, the American colonists were able to confirm an official alliance with the Government of France and obtain French assistance in the war against Great Britain.

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The Louisiana purchase was the Purchase of imperial rights to the western half of the Mississippi river basin from France by the U.S. in 1803. The Louisiana Purchase eventually doubled the U.S. The Louisiana Purchase was signed in Pairs, France by May 2, 1803. But, it was antedated on April 30, 1803.

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Lewis and Clark's team mapped uncharted, land, rivers, and mountains. They brought back journals filled with details about Native American tribes and scientific notes about plants and animals they'd never seen before.

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on March 28,1830 the U.S. congress passed the Indian removal act, making the government clear-cut push to remove Native American tribes from east Mississippi river. this ended with genocide, slavery, and homelessness.

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The group included 120 wagons, about 1,000 people and thousands of livestock. their trek began on May 22 and lasted five months. It effectively opened the floodgates of pioneer migration along the Oregon Trail and became known as the Great Emigration of 1843.

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California Gold rush, rapid influx of fortune seekers in California that began after gold was found According to estimates, more than 300,000 people came to the at stutters mill in early 1848 and reached its peak in 1852. to the territory during the Gold Rush.

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The Homestead Act, enacted during the Civil War in 1862, provided that any adult citizen, or intended citizen, who had never borne arms against the U.S. government could claim 160 acres of surveyed government land. Claimants were required to live on and improve their plot by cultivating the land.