Recently I listened to an anthropologist give a simple explaination as to why europeans advanced more than "other people" (they were being PC not mentioning blacks).
It was the harsh climate. Simply, because of the short crop growing, fishing and hunting seasons and bitter cold only the smartest of tribes or groups survived to breed. This process over thousands of years removes inferior people from the gene pool leaving only the better ones. Farmers have used the same principal to produce better livestock by only using the best bulls, stallions, rams etc as breeding stock.
In recent times we saw great strides made by the frontier colonies of the USA and Australia after only 200 years. Same principle. The lazy, criminal and stupid died in the deserts, forests and trails. The industrious and intelligent multiplied.
In warm climates where food is plentifull and life is easier, no such process takes place eg: africa, pacific islands.
The results speak for themselves.
It occured to me recently that this process is being reversed today.
I regularly deliver to a leading maternity hospital. I notice that only third worlders and white trailer trash seem to be having children. Look at our society. Smart, well-educated, white professionals are only having one or maybe two children. Many are having none at all. Given that they must pay lots of tax to support welfare, they feel they cannot afford a lot of children since they want to provide well.
Blacks, arabs, white trash and kookarachas are breeding like rats. It is only welfare, social security, government/subsidised housing etc that allows them to do this. In short.....welfare is allowing the lazy, ignorant and stupid to multiply and the smart, industrious people to decline.
Welfare is winding back the clock of human development!