Are you requesting a answer for all of them or the first one?
1. Hinduism
Answer:
Level II intelligence is most prevalent among Asians, followed by Caucasians, then African Americans
Explanation:
The most controversial claim in Arthur Jensen's article how much can we boost IcU and achievement is that level II intelligence is most prevalent among Asians, followed by Caucasians, then African Americans.
I agree with the last answer. but also some other and common reasons are because people have the choice to move there or move away, because some people are born there and enjoy their lives there, or, like i already said, because of the examples given in the last answer. :)