The Jewish beliefs and practices have been spread all over the world today
What I personally know is irrelevant. However, a link concerning current Jewish practices has been provided below.
Current estimates of those who call themselves Jews in the US according to recent polls is about 2% of the U.S. population.
Judaism is called Judaism.
Judaism.
A Jewish person is of Hebrew descent and practices Judaism.
Judaism is widely practiced today (21st Century). Also, separate from its practice, Judaism is arguably STUDIED today by more people than ever before in its history.
No, such practices are forbidden in Judaism.
Rabbis.
Judaism. (However, it is also true that in ceremonial practice, Judaism has evolved and developed practices that would be strange to the original Israelites, nonetheless, the roots of those practices, which is the faith, or belief system, is the same.)
He is Jewish, but he does not publicize whether he practices it or not.
In the first half of the 20th century Conservative Judaism had fast growth. In the 1990's the Conservative Judaism was the largest denomination. Today it is not the largest denomination in America.