... its source, and ultimately find a water route to the Pacific, while obtaining samples of vegetation and information. Aided by French-Canadian fur trader Toussaint Charbonneau and his native American wife Sacajawea, Lewis and Clark reached the Pacific 18 months later, and successfully returned to Jefferson with the news. 1804 The Twelfth Amendment This amendment established separate votes in the Electoral College ... ...

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• Grade Level: Undergraduate