http://lazypawn.com/wordpress/wp-content/uploads/Race_Evolution_Behavior.pdf
Several hundred years later, European explorers had the same impressions. They wrote that Africans seemed to have a very low intelligence and few words to express complex thoughts. They praised some tribes for making fine pottery, forging iron, carving wooden art, and making musical instruments. But more often, they were shocked by the near nakedness of the people, their poor sanitary habits, simple houses, and small villages. They found no wheels for making pots, grinding corn, or for transport, no farm animals, no writing, no money, and no numbering systems.
The Whites who explored China were just as racist as those who explored Africa, but their descriptions were different from what they and the Arabs had written about Africans. In 1275 Marco Polo arrived in China from his native Italy to open trade with the Mongol Empire. He found that the Chinese had well built roads, bridges, cities connected by canals, census takers, markets, standardized weights and measures, and not only coins, but paper money as well. Even a postal system was in existence. All of these made him marvel when he compared the Chinese to what he saw in Europe and the Middle East. Even though he was an Italian, proud of his people and well aware of the greatness of Ancient Rome, Marco Polo wrote: "Surely there is no more intelligent race on earth than the Chinese.
Culture could also explain most of these differences. And the Chinese? If they're so smart why do they produce so many thuggish governments? Lots more questions here than answers...
“And the Chinese? If they’re so smart why do they produce so many thuggish governments? Lots more questions here than answers...”
One word
Christendom.
Christendom gave us the magna carta, the greatest stimulus to political evolution, technological advances, business and commerce.