Sophia's crossword puzzle

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Across
  1. 2. a country northwest of Austria
  2. 7. a hard stone with sharp edges
  3. 8. continent with hunter gatherers
  4. 10. the star with directions
  5. 11. something made by putting crushed rock and animal fat on a wall
  6. 13. a place where people used to live for protection
  7. 15. a country southwest of Syria
Down
  1. 1. the use of new ideas and tools to do work
  2. 3. long periods of extreme cold
  3. 4. a traveling Person without a home
  4. 5. what we thought people will call our era
  5. 6. the early part of human history, also known as the old stone age
  6. 9. a country that is west of the black sea
  7. 12. a natural element used to cook food and for light
  8. 14. the country west of Italy