If white people are allowed to live in Africa for a long time, will future generations gradually become black?

The skin is often in close contact with the hot sun, which will produce melanin and tan after a long time. But this kind of black is different from African black, and it is a genetic problem. Caucasians are tanned, but their genes have not changed, so if they don't appear in the hot sun for a while, they will gradually return to their original white color. This is the self-repair function of genes, and external forces cannot be changed in a certain period of time. Unless a white man marries a black man and has children, he may be born white or black, or somewhere in between. For example, if you spend a day at the seaside and get kissed by the scorching sun. The next day, you find yourself red or black all over, even showing signs of peeling, but after a period of rest, you will return to your previous skin.

Different races living in different parts of the earth were not formed overnight. After tens of thousands, hundreds of thousands and millions of years of long adaptation, constant change and precipitation, human beings have lived in different regions, which is not a simple assumption that can be explained and described.

I understand the meaning of this theme, that is, if Africa is governed by whites and blacks immigrate to Europe, then Africa will be as developed as Europe now, and Europe will become another backward Africa, thus proving that whites are better than blacks. This problem is similar to Kang Youwei's theory of national character improvement. In fact, such a question is embarrassing to think about, and it is really unreliable. It is necessary to replenish the brain, but it really doesn't make much sense to make you want to die.

If we don't talk about some political factors, a large number of Europeans with industrial civilization will come to Africa to start businesses, which will certainly bring advanced productivity to Africa. However, the development of things is not a simple imagination. As we all know, Europe's colonization of Africa is very cruel and basically predatory. This is why Africans fought hard after awakening until they drove the white Europeans out of Africa. For Africans, they would rather starve to death than be enslaved. Therefore, it is impossible for Europe to colonize Africa in large numbers, so it is impossible to talk about what Europeans are doing in Africa.

Africa has fierce sunshine, rich melanin, dark skin, curly hair, heat insulation and brain protection, and rich wild fruits and vegetables, so people are naturally tired in hot weather. So people who live near Hongdu are generally like this. If African whites have been in the Stone Age for thousands of years, I believe they are the same as Africans. If you come from China, the result is the same!

South Africa is already a good example. The essence of western civilization has not been absorbed by Africa, and Africa is still advancing at its own pace, which is not in line with the civilized world, so Africa is also the most barren and backward region.

Exchanging the population of Europe and Africa is equivalent to exchanging the names of two continents. The leader continues to lead and the laggard continues to lag behind. Wealth depends on talent and system. This is the source of social development.