A. William Clark

B. Meriwether Lewis

C. the Lewis and Clark Expedition

D. the Louisiana Purchase

E. Sacagawea

1. To lead the exploration of the Louisiana Purchase, President Jefferson chose a young army officer named ___.

2. ___ cost the United States $15 million, but it also doubled the size of the nation.

3. ___ was a big help to the Lewis and Clark Expedition in dealing with the Native American peoples the group encountered because she could speak the Shoshone language.

4. ___ provided information about places previously unknown to Americans and proved conclusively that an all-water route across the continent did not exist.

5. The talents that ___ brought to exploring the Louisiana Purchase included skill as an artist and mapmaker and natural abilities as a leader.

(More questions on next page)

A. ColumbiaRiver

B. Missouri River

C. PacificOcean

D. Clatsop

E. Mandan

6. The Lewis and Clark Expedition started from St. Louis and traveled all the way to ___, the goal of trip.

7. The explorers started out on the ___.

8. The explorers spent the first winter with the ___ tribe.

9. On the final stretch of the trip west, they traveled on the ___ .

10. At the end of their trip west, they built a fort named ___.