Social studies crossword

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Across
  1. 2. Bridge three across
  2. 3. four across
  3. 5. six across
  4. 6. Era
  5. 9. six down
  6. 10. eight down
  7. 11. five across
Down
  1. 1. one across
  2. 4. one down
  3. 7. eight across
  4. 8. one across
  5. 11. three down