Q. Why did God give the Torah to the Jews and not some other people?
The Talmud states in Betzah 25b that the Jewish people were chosen for the Torah because they are azzim, strong and determined. One view is that Jews are passionate and need the Torah to control them.
Another view says that it was always going to be hard to live by and teach the Torah, and God needed a people who would be stubborn in their loyalty.