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Manifest Destiny, a phrase coined in 1845, is the idea that the United States is destined—by God, its advocates believed—to expand its dominion and spread democracy and capitalism across the entire North American continent. The philosophy drove 19th-century U.S. territorial expansion and was used to justify the forced removal of Native Americans and other groups from their homes. The rapid expansion of the United States intensified the issue of slavery as new states were added to the Union, leading to the outbreak of the Civil War.

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The Louisiana Purchase of 1803 brought into the United States about 828,000 square miles of territory from France, thereby doubling the size of the young republic. What was known at the time as the Louisiana Territory stretched from the Mississippi River in the east to the Rocky Mountains in the west and from the Gulf of Mexico in the south to the Canadian border in the north. Part or all of 15 states were eventually created from the land deal, which is considered one of the most important achievements of Thomas Jefferson’s presidency.

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The California Gold Rush was sparked by the discovery of gold nuggets in the Sacramento Valley in early 1848 and was arguably one of the most significant events to shape American history during the first half of the 19th century. As news spread of the discovery, thousands of prospective gold miners traveled by sea or over land to San Francisco and the surrounding area; by the end of 1849, the non-native population of the California territory was some 100,000 (compared with the pre-1848 figure of less than 1,000). A total of $2 billion worth of precious metal was extracted from the area during the Gold Rush, which peaked in 1852.

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two most important things you should know about. Often called the Yukon Gold Rush, was a mass exodus of prospecting migrants from their hometowns to the Canadian Yukon Territory and Alaska after gold was discovered there in 1896. those who got there safely stood little chance of finding gold. While. this event help U.S Starting in the 1870s, prospectors trickled into the Yukon in search of gold. By 1896, around 1,500 prospectors panned for gold along the Yukon River basin—one of them was American George Carmack.

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two important things about the Oregon trail is that it created a way from most to go down and help them move to one state to another. this event help the U.S it help people travel