civil war technology

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Across
  1. 3. What was the newest rifle during the civil war?
  2. 4. what floating object in any color and filled with helium was made during the civil war?
  3. 5. what was the newest form of communication?
  4. 7. what was the name of the bulletproof ship?
  5. 8. what is the name of a canister firing a lot of artillery
  6. 10. which side had better generals
Down
  1. 1. which side was more technologically advanced
  2. 2. what ammo was used in the Springfield rifle
  3. 6. what was the firepower that could hit targets from miles away named?
  4. 9. which side had more railroads