USA HISTORY

Detailed explanation-1: -Little is known about the life of York. He was an enslaved man owned by William Clark, and later became a member of the Corps of Discovery. York is often mentioned in the journals kept by both Lewis and Clark throughout the course of the Expedition.

Detailed explanation-2: -While at Fort Mandan, Lewis and Clark met French-Canadian trapper Toussaint Charbonneau and hired him as an interpreter. They allowed his pregnant Shoshone wife, Sacagawea, to join him on the expedition. Sacagawea had been kidnapped by Hidatsa Indians at age 12 and then sold to Charbonneau.

Detailed explanation-3: -Sacagawea was either 16 or 17 years old when she joined the Corps of Discovery. She met Lewis and Clark while she was living among the Mandan and Hidatsa in North Dakota, though she was a Lemhi Shoshone from Idaho.