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Thomas Jefferson chooses Lewis to lead the first westward expedition across America.
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France and Napoleon Bonaparte sell 828,000 square miles of land west of the Mississippi River to the United States for 15 billion dollars.
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Merriweather Lewis asks friend and old captain William Clark to help him in him expedition.
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Lewis makes his first journal entry.
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The expedition encounters Prairie Dogs for the first time.
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Seargent Charles Floyd dies of an exploded appendex. He was the one and only person to die on this expedition.
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The expedition has its first encounter with a grizzly bear.
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Sacagawea meets her original tribe and now the Shoshone chief, her brother.
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The expedition votes on a place to stay for the winter after they reached Mount Hood and the Pacific Ocean. This is the very first ttime that a slave and a woman got to vote on anything.
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The expedition splits, Lewis and half go up to the Great falls, and Clark and half go down to explore the Yellowstone River.
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Lewis makes his last journal entry, and also accidentally shoots one of his men.
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Lewis and Clark return home to St. Louis after a long expedition.
