C. western desert
If that’s not right then idk that should be right tho by looking at the map
A. a country should use its military to establish an empire (apex)
Explanation:
1. Federalism
2. The U.S. Constitution
3. Checks and Balances ( The legislative,Executive, Judicial Branch)
4. Popular Sovereignty
The answers are:
Meriwether Lewis, William Clark and Sacagawea