9
Exploring the West
Indians and tried to explain that these native peoples of the
Great Plains now had a new father, one who lived far off to the
East—President Jefferson. The site became known to Ameri-
cans as Council Bluffs.
As they made further progress along the river, the Americans
met other Plains nations, including the Yankton Sioux near
today’s Yankton, South Dakota, and their neighbors, the Teton
Sioux outside the modern-day capital of South Dakota, Pierre.
During that late September encounter, Teton warriors tried to
take one of the expedition’s pirogues (canoes). This resulted in
a face-off, with hundreds of Sioux aiming their arrows at the
members of the Corps while the Americans aimed their rifles
and the cannon on the keelboat at the Indians. Fortunately, the
tense moment ended peacefully.
The party progressed further up the Missouri, where they
met the Arikara people near the mouth of the Grand River, then
the Mandan and Hidatsa, who were living together in several
villages north of today’s Bismarck, North Dakota. It was now
October and Lewis and Clark chose to spend the Corps’ first
winter with these friendly Indians. During the months spent
encamped with the Mandan and Hidatsa the men experienced
bitter cold, with the thermometer dropping to –50º F (–46º C).
The Missouri froze over, allowing the Americans and Indians to
cross from village to fort. These were peaceful days spent with
Indians who were hospitable, always willing to trade American
tools for baskets of corn.
The Mandan villages were the last point on the Missouri
River generally known to Americans. Come spring the Corps
of Discovery would be crossing completely unknown territory.
That winter they gained information from the Indians about a
great waterfall to the west. They also hired a French fur trap-
per, named Toussaint Charbonneau, who agreed to take the
Americans upriver. With him was his 15-year-old Shoshone
wife, named Sacajawea. Her people lived further west and it
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