He didn't. Although in some occupied countries he used `Jewish Councils`, manned by prominent Jewish citizens to cooperate with the Nazis in executing anti-Jewish policies. These Councils usually used - then and afterwards - the excuse that by cooperating they hoped to prevent even worse measures.
He used pseudo-science and claimed that Jews were (genetically) a race in order to justify eliminating the Jews.
Yes, hydrogen cyanide.
I don't know what group of people you belong to, but I wonder how you would feel if people were asking why it is wrong to kill your group. Use your thinking cap.
It didn't start with an 'n' but it was called Zylon B they have cans of it in the Muesem of Tolerance .
Hitler blamed the Jews for Germany's problems.
The "herrenvolk".
Hitler used the Jews and other sections of society as scapegoats, blaming all the problems on them. To Germans at the time Hitler made sense, he united everyone by providing explanations for Germany's problems.
Excluded the jews. That's one.
Gustapo, His secret police
That they were purely for the experimentation of the health of the German people and that the eople were doing it willingly
Hitler was basically a psycho. He was probably in need for a serious mental checkup. Hitler regarded the Jews as the biological root of Bolshevism (Communism). In many of his speeches he used the words Communists and Jews interchangeably. Hitler saw it as his mission in life to eliminate Communism.
"The Final Solution" was a euphemism used by Hitler in decribing the systmatic extermination of six million Jews.