Social Studies crossword puzzle

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12345678910
Across
  1. 2. 2 down
  2. 3. 5 across
  3. 4. 8 down
  4. 5. 1 across
  5. 6. Era
  6. 8. Bridge 10 across
  7. 10. 6 down
Down
  1. 1. 7 across
  2. 4. Era
  3. 5. 4 across
  4. 7. 9 down
  5. 9. 3 down