SS L to J 1-20 puzzle

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Across
  1. 2. a complex society with government, art, writing, and religion
  2. 3. One who travels for survival; group that moves from place to place
  3. 5. A symbol that shows cardinal and intermediate directions
  4. 6. a group with the same social status
  5. 8. Lines of latitude
  6. 10. Worship of many gods
  7. 11. a pyramid-shaped temple tower
  8. 13. The group of forty-eight states that are linked together
  9. 14. A model of Earth shaped like a sphere or ball
  10. 16. Lines of longitude
  11. 19. An area of land that is enclosed or nearly enclosed by land
Down
  1. 1. The four major directions: north, south, east, and west
  2. 4. Belief in one god
  3. 6. A person who makes maps
  4. 7. The distance east or west of the Prime Meridian measured in degrees
  5. 9. The imaginary line that goes around the middle of Earth. It divides Earth into the Northern and Southern Hemispheres
  6. 12. a system of writing
  7. 15. The distance north or south of the Equator measured in degrees
  8. 17. Form of government; one ruler controls several kingdoms
  9. 18. Part of a map that shows what distances on the map stand for in actual distances