I want to use this map to illustrate the asia vs west problem. (a) the northern

I want to use this map to illustrate the asia vs west problem.

(a) the northern European IQ average was closer to 115 before the industrial revolution.
(b) china has a 5 pt advantage but will return to relative equilibrium with europeans in just a few decades too.

– “Why does it matter?” –

(a) The most influential factor in the determination of prosperity is the average IQ of a polity.
(b) European average IQ has lost 15 points since ~1830.
(c) Chinese average IQ is losing and will lose its ~5 point advantage over the next few decades.

Why? Low Middle-Class births.