growth and spread of islam

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Across
  1. 1. shared language of muslims
  2. 3. deputy of the prophet
  3. 4. tries to resolve the conflict
  4. 6. Ali's son
  5. 9. striving to encourage
  6. 12. a person or proclaimer of the will of god
  7. 14. Uthman's family
  8. 16. the spread of something
  9. 18. the muslim community
  10. 19. larger opinion over others
  11. 20. people linked by culture religion etc.
Down
  1. 2. rightly guided caliphs
  2. 5. the international city
  3. 7. kept it together
  4. 8. muhammad's son in law
  5. 10. what muhammad did not have also another word for son
  6. 11. those who wanted Ali
  7. 13. period expanded old trade networks
  8. 15. those who supported Abu-Bakr
  9. 17. muhammad's friend and a military leader