geography word puzzle

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Across
  1. 4. people governing an organized community
  2. 6. someone in charge of a people or group
  3. 8. the northern continent of america
  4. 11. someone under a king who gives knights land
  5. 14. the southern continent of america
  6. 16. another word for serf
  7. 19. the largest continent that is a whole country
  8. 21. another word for a group of humans
  9. 22. when there is one leader over a people or group
  10. 23. the country we live in
  11. 24. people sharing a common cultural background
  12. 26. another name for a peasant
  13. 28. a fighter that is given land to fight
  14. 29. when country's or people fight over something
Down
  1. 1. a period where humans developed machines
  2. 2. the coldest continent on earth
  3. 3. the continent in between asia and africa
  4. 5. the belief of loving your country
  5. 7. the study of physical features of the earth
  6. 9. the hottest continent on earth
  7. 10. a government where the people elect leaders
  8. 12. a period where we fought with each other
  9. 13. a principles a country follows
  10. 15. belief in a higher being or god(s)
  11. 17. the largest continent on earth
  12. 18. a system where there is a royal family in charge
  13. 20. a social construct used to group people
  14. 25. taking over other countrys by force
  15. 27. the very large rock we all call home
  16. 28. A male ruler of a monarchy