U.S history WW2 crossword puzzle

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Across
  1. 2. what was the Krummlaufs barrel angle besides the 30 degree
  2. 4. what caused WW2
  3. 8. what sank the Lusitania
  4. 10. where is Hitler from
  5. 11. what was a diplomatic communication issued from German Forien offices
  6. 12. who lost the war
  7. 14. where is Stalin from
  8. 16. how did Hitler die
  9. 18. who started the expansion of the German empire in ww1
  10. 19. where is FDR from
  11. 20. what did they study in the Manhattan project
Down
  1. 1. Largiest U.S Invasion
  2. 3. who was an Italian political leader who became the fascist dictator of italy
  3. 5. how many times did Germany surrender in WW2
  4. 6. what was the German's curved barrel attachment on the MP-44 known as
  5. 7. who was the Soviet Union
  6. 9. what was the name of the German government before the Nazis took over
  7. 13. who was the Nazis leader
  8. 15. who won the war
  9. 17. where is Mussilini from