Across
- 3. An empire must efficiently organize this
- 5. An empire must distinguish its core from this
- 6. An empire must distinguish its citizens from these
- 7. An empire must cooperate and compete with these
- 9. An empire must unite a diverse ___
Down
- 1. An empire must use this to expand its territory
- 2. An empire must impose a dominant___ on an existing___
- 4. An empire must maintain trade ___
- 8. An empire must use this to unite its people