Take a look at the Amazon page for this book.

For a while now, Richard Lynn and his co-authors have been trying to get the message across (1) that average IQs are far from identical across nations, and (2) that average IQs of nations are strongly correlated (0.7) with their economic performance.

Unfortunately, Lynn's message is being studiously ignored in an era when everyone wants to believe that it's "self-evident" that everyone is "created equal". For some reason, people seem to have a deep-seated aversion to accepting that there is any strong genetic component causing differences in people's intellectual abilities - let alone that this results in vast economic differences on the level of nations, worldwide.

I understand that people recoil at the thought of cruel extremism like the world saw in World War II. Thinking that a difference in intelligence warrants such extremism is an awful mistake - and it is one that I think may ironically be committed most by people who are themselves not the smartest pearls.

But even when the truth turns out to be unpleasant, denial is no way ahead.

Besides, the Aryans are wrong. Whites aren't the smartest.

But who is?

Well, read some of Richard Lynn's books.