11. False. He wrote Mein Kampf in 1925 and WW1 ended in 1918.
12. False, it restricted the Jews.
13. I think the answer is True.
14. It should be True.
15. True, this was because of the fact that Jews and others where being persecuted and tried escaping.
16. I think the answer to this is True.
17. True, he served in the Bavarian Army.
18. False, an estimated 91 or more jews where killed.
19. True, he was the leader by 1921.
20. True.
Hope This Helps! :)