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Louisiana Purchase treaty signed
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The Senate ratifies the Louisiana treaty by a vote
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The exploers started up the Missouri River with small canoes
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The Corps reach the White Cliffs region of Missouri
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The Corps reach a fork in the Missouri and try to figure which way to go
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lewis reaches the Great Falls of the Missouri River
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Lewis celbrates his 31st birthday
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The expedition reaches sets out for the Bitterroot Mountains
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Clark wrote his journal "Great joy at camp"
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The expedition returned back to St.Louis