Yes, but Orthodox Judaism does not.
Judaism doesn't allow it (Deuteronomy ch.5).
Not for Orthodox Jews, but the other branches of Judaism allow it.
it unified china and held them together
In orthodox Judaism, the men are separated from the women, some sects don't allow women in at all. In reform Judaism, the seating arrangement is generally the same as in the majority of western Churches; men and women sit together, they are not segregated. Pews or chairs
Orthodox Judaism doesn't allow it.
I was told no, unless you have a twin.
Yes, but not all Reform rabbis perform them.
Absolutely! Sometimes, Jews make mistakes like everyone else.
According to Wikipedia, Judaism does not allow shaving with sharp instruments against skin, but allows trimming with scissors and possibly dry-shaving machines, as they work on same principle as scissors rather than cutting hair against skin.
adaptation
Orthodox Jews don't allow it, but the other branches do whatever they want!