The question is backwards. Most of the world (99.7%) is not Jewish, so the question is not why most people are not Jews, but why a small percentage are. Judaism is a tribal religion that did not proselytize for much of its history. Therefore, most people who were not Jews never became Jews.
Certainly not. By far, the vast majority of the people who fought against his regime were non-Jewish.
Passover is usually only celebrated by Jews
Antiochus made those additions to the Jewish temple
The same things as non-Jewish homes.
No. The Nazis didn't made clothing out of Jewish Skins.
GOD
No. She has made statements to the effect that she goes to church, so she is some kind of Christian. However, she has not explicitly claimed what denomination she belongs to.
The motto of Jewish Lights Publishing is 'Words for the Soul - Made in Vermont'.
Adolf Hitler
Israel.
he is known for the additions he made to the Jewish Temple
Only if it's made with kosher ingredients