Social Science Crossword Puzzle

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Across
  1. 3. system of rules/correct procedures
  2. 4. practice of farming/growing crops
  3. 6. journey to a sacred place
  4. 7. system of electing new leader
  5. 10. leaving own country
  6. 13. devotion to one country
  7. 16. differences among individuals
  8. 17. coming to a foreign country
  9. 19. inhabitant of a city or town
  10. 20. fight between two groups
Down
  1. 1. paid work
  2. 2. area under a state or government
  3. 5. system of faith and worship
  4. 8. study of places, people and environment
  5. 9. study of past
  6. 11. production and trade of things in a country
  7. 12. largest continent
  8. 14. government by the people,for the people
  9. 15. social effort for well being of people
  10. 18. high level education institution