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Continental Congress adopts the Declaration of Independence, declaring America's independence from Britain.
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The Constitution created America's national government and set the basic laws, it also assured some basic rights for America's citizens.
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The Louisiana Purchase acquired the Unites States 828,000 square miles of land
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Federal law passed in the U.S. that forbade new slaves being imported into America.
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Doctrine that stated if Europe made anymore efforts to take control of any one independent state in North or South America, it would be seen as "the manifestation of an unfriendly disposition toward the United States."
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Thousands of people came to California in hopes that they would find gold and become wealthy.
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Several U.S. federal laws that gave someone ownership of land, usually called a "homestead," for very cheap in order to further the settlement of western territories.
