Because of the great development of mathematics, ancient civilization was backward. The immigration policy of the United States has absorbed a large number of European talents and formed the present situation.

As far as China is concerned, it is a catch-up period, and it is said that it is making up!

There is another important reason, because the development of modern mathematics mainly comes from Europe and America, so which formula theorems use principles that are more in line with the thinking of European and American cultures.