Across
- 3. Consisting of 15 republics, a superpower during the Cold War
- 7. A major European power during WWI with a dual monarchy
- 8. The Empire that took Constantinople
- 11. A flourishing Mesoamerican empire which existed in central Mexico
- 17. The military government of Japan during the Edo period
- 18. The largest continually spanning empire in history
- 19. Also referred to as the Persian Empire
Down
- 1. This state encompassed most of Northern South America
- 2. A federative union between Poland and Lithuania
- 4. An ancient empire which greatly influenced modern culture and society
- 5. A dynastic Kingdom of Korea that lasted more than 500 years
- 6. The most powerful German state before its unification
- 9. A now Italian state ruled by the Pope for over 1100 years
- 10. Often abbreviated as the "HRE"
- 12. A country in the Balkans formed after WWI
- 13. Parts of this country were annexed through the Munich Pact
- 14. Alternatively, the Eastern Roman Empire
- 15. A republic which is now a modern day state of the US
- 16. An empire which encompassed most of modern day India