Cissie's puzzle

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Across
  1. 4. The holi text of Islam
  2. 6. Capital city of Mississippian civilization
  3. 7. The militatry class in Japan during Heian Period
  4. 10. The capital of Abbasid dynasty
  5. 12. Happened between Rome and Constantinople
  6. 17. The dynasty when many Chinese philosophies occurred
  7. 18. The eastern Roman Empire
  8. 19. Predecessors of Aztecs
  9. 20. The gold era of Caliphate
Down
  1. 1. Continent where has small self-governed chiefdoms
  2. 2. The Chinese dynasty when the Grand Canal was built
  3. 3. Country declined due to reduced output of gold
  4. 5. The only god that Islamic people believe in
  5. 8. The place mentioned in the Five teaching of Islam
  6. 9. The dynasty when gun powder was invented
  7. 11. The prophet of Islam
  8. 13. The continent where the crusades begin
  9. 14. The major religion during Japan's Heian Period
  10. 15. The capital city of Japan during Heian Period
  11. 16. The two groups of Muslims