Is Jewish a nationality

Answer 1

"No. Even though many Jews look like lookalikes, Judaism is a religion."

That is wrong.

Jews are a nation and have been before Moses brought them the Jewish religion. Furthermore, Jews who become atheists or followers of another religion remain Jews.

A common religion is a typical feature of a nation and historically many (or most) nations had their own religions, including the Greeks and the Persians (Zoroastrianism).

The correct answer is that "Jewish" is a nationality and that Jews, as a nation, are typically followers of their own aboriginal religion, although some have converted to Christianity or other religions.

P.S.: Technically the name of the nation is "Israel" and the state of Israel is named after the nation. The nation of Israel consists of twelve tribes, three of whom are the "Judaeans" (Jews) and make up 95% of "Jews" world-wide.