Textbook puzzle

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Across
  1. 3. A city in western Saudi Arabia
  2. 4. War, War between china and Great Britain over restrictions to foreign trade.
  3. 6. City-state in ancient Greece that evolved from a monarchy to a limited direct democracy and became famous for its great cultural achievements
  4. 8. A person who flees from home or country to seek refuge elsewhere
  5. 9. Title of the rulers of ancient Egypt
  6. 11. Early soviet secret police force
  7. 13. System of thought and belief
  8. 14. Giant
  9. 16. Someone who takes financial risk to make a profit
  10. 18. war, A war fought between people in the same nation
  11. 19. In Hindu belief, all the actions that determine a person's fate in the next life
Down
  1. 1. Belief that one race is superior to another
  2. 2. A nation east of India that was formerly part of Pakistan
  3. 5. Religious belief that is contrary to the official teachings of a church
  4. 7. The holy book of Islam
  5. 9. A Greek philosopher also mathematician and founder of the Pythagoras theorem
  6. 10. A Muslim savior of the faith
  7. 12. World Trade Organization
  8. 14. A group of companies that join together to control the production and price of a product
  9. 15. Give up or step down from power
  10. 17. System of government in which officials are chosen by the people