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jamestown was founded. the first permenent english colony
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the date that the decloration of independence was signed into effect
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the year that the us constitution was signed
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a supreme court case in which thde court ruled that it had the power to abolish laws by declaring them unconstitutional
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louisiana purchase began
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american civil war begun officially in 1861 and ended 5 years later in 1865
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a series of congressional laws intended to settle the major disagreements between free states and slave states , which included admitting california as a free state