Civil War crossword

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Across
  1. 2. A Northerner who went South after Civil War
  2. 4. A vital piece of equipment in Civil War
  3. 6. A large gun used in the Civil War
  4. 7. A steam-propelled warship
  5. 9. A large farmed area
  6. 10. A portion of the country
  7. 11. An alliance between states
Down
  1. 1. A form of legal tender paper money
  2. 3. Person who fights for slavery
  3. 5. Common style shoe in the Civil War
  4. 8. It comprised foot-soldiers