Sacajawea played a guiding role during exploration of which region or area?

• A. Louisiana Purchase region
• B. Great Plains
• C. Pacific Northwest
• D. Southwest

Answer: (A)

Sacagawea’s guiding role is tied to the Lewis and Clark expedition as it moved into the Pacific Northwest. She helped with navigation and diplomacy, using her knowledge of the Shoshone language to communicate with tribes they encountered and to interpret local guidance. Her help was especially crucial when the expedition crossed the mountains and pressed toward the Columbia River region, ultimately reaching the Pacific coast. That Pacific Northwest area—present-day parts of Oregon, Washington, and Idaho—answers where her guiding influence is most connected. The Louisiana Purchase region describes the territory they started from, not the destination of their exploration, and while the journey did pass through the plains, the defining region of Sacagawea’s guiding is the Pacific Northwest.