Its probably because white people have always had a desire to be involved in things created by minority groups. take cinco de mayo, for example--while this was most likely just an excuse for people to get drunk on weekdays, it was ALSO something that white people were inherently excluded from and that created a sort of "imbalance" in their hunger for dominance
Most of the railroads were individually owned so to support an internal east west trading system all the companies would have to cooperate
Answer:
Japan has laid more emphasis on human resources