World war 2

123456789
Across
  1. 4. codename for the type of nuclear bomb that was detonated over the Japanese city of Hiroshima
  2. 5. was a historical nation-state and great power that existed from the Meiji Restoration in 1868 until the enactment of the post-World War II
  3. 7. the Japanese surprise air attack on the American Pacific Fleet
  4. 8. codename for the type of nuclear bomb that was detonated over the Japanese city of Nagasaki
  5. 9. the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.
Down
  1. 1. Great Britain, France, and Soviet Union
  2. 2. alliance were Germany, Italy, and Japan.
  3. 3. The person who invaded Poland from the west.
  4. 6. the impact of the Treaty of Versailles following WWI, the worldwide economic depression