History Mystery

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Across
  1. 2. Hot water vapor
  2. 4. Drink caffeine for one of these boosts
  3. 5. Kiev is the capital
  4. 9. A danger or a risk
  5. 10. Nuclear power source
  6. 11. Understate the significance
  7. 12. Looks after the sick
  8. 13. Another word for tantrum
  9. 14. They never forget
  10. 15. USSR
  11. 17. “Knowledge is _____”
Down
  1. 1. Ride this to get a bird’s-eye-view of the carnival
  2. 2. Chemist, for example
  3. 3. Left, as a sinking ship
  4. 4. Move people to safety
  5. 6. Reason to call 9/11
  6. 7. They’re driving a big red truck
  7. 8. Emitting gamma rays
  8. 14. Blow up
  9. 16. TV coverage