No, the Reform and Liberal movements has the largest number of followers.
No. Every year the Orthodox Jewish population seems to be shrinking. Reform Jews is now the largest group of Jews.
In Europe, the largest numbers of Jews and Muslims were in Spain. I suspect the number of both in Egypt was probably greater.
Judaism is a religion. Jews can live in, or come from, just about any country. Today, the largest Jewish communities are in America and Israel, with smaller numbers of Jews in almost every country in the world.
It depends entirely on what country you're referring to, and whether you are talking about Orthodox Jews or non-Orthodox Jews.
No.
Yes, non-Orthodox Jews can become Orthodox by becoming more observant. Non-Jews can become Orthodox Jews through Orthodox conversion.
On the contrary, it's the only branch of Judaism whose numbers are increasing. Besides, Orthodox Jews (or any Jews) are not the type of people to brandish deadly weapons. Orthodox Judaism has been around for many centuries and will continue to be.
Orthodox Jews are strictly observant. Hassidic Jews are even more strict.
Orthodox and Ultra-Orthodox Jews are strict followers of Jewish law.
Unfortunately, in Israel, only Orthodox Jews get all the special privileges.
They are Jews who keep the Torah.