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  The Louisiana Purchase was made in Oct., 31 1803. It doubled the size of the United States of America.
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  York was a dog
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  the first thing they encountered was a buffalo
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  The first fierce Native American tribe encountered by the expedition near Piree, SD was Tenton the same date as Lewis and Clark encoutered buffalo.
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  Sacagawea
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  They spent the winter in SD
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  St. Lowis is the city the expedition left.