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the started up stream to the mouser river
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when the indains became threatning
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the expodishoin almost lost one
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On June 3 the expedition came upon a fork in the river. Though the branches of the fork were of equal size, the captains believed that the southern branch was the Missouri; this would lead them to the Rockies, which they hoped to cross before the autumn snows.
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They reached the Snake River on October 10, the Columbia six days later
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On March 23 the Corps of Discovery took its leave of Fort Clatsop and began to travel up the Columbia River. During this leg of the journey, the men battled a strong current and frequently had to portage around the river's falls.