In ancient China, there is a saying called "the dragon gives birth to the dragon and the phoenix, and the mouse gives birth to the hole", which means that the fate and basic conditions of people, innate factors are very important, and it is difficult to change the day after tomorrow. This sentence is also said in the modern world, so it is precisely because of this, generally speaking, the same race, in fact, the whole development is not much different. The yellow people in the most typical East Asia are similar, and the white people in Europe are also similar. But there are exceptions to this, the most typical is the black, we know that the black is the most backward race in modern evolution, especially the intellectual evolution is very poor. But it is strange why black Americans are more intelligent and intelligent than black Africans? Or why are black Americans the smartest? The reason is only four words.
Although human beings originated in Africa, it is ridiculous that black Africans are now the worst developed. In particular, the evolution of black Africans, which is the lowest in humanity, especially the level of intelligence, is 35 points lower than that of whites and yellows. So this is also the main reason why it is difficult for black people to appear scientists, cattle people, and it is also the reason why black people are so stupid.
And in Europe, South America and other black people are also the same, especially Haiti, the country black people are even more clumsy, intellectually inferior. But the only exception is the United States, where we see that there are many good black people in all walks of life in the United States. And the United States has also produced a lot of black scientists, politicians, especially presidents, secretaries of state, etc.
And black American intelligence tests are generally higher than other black people, so black Americans are smarter than other black people. For this reason, in fact, many people do not understand, why is this? Why are black Americans the smartest? In fact, there are only four words for the reason, that is, "one out of ten thousand miles".
We know that no matter what thing, no matter what group, no matter how bad it is, there are excellent ones, that is, the short one is tall, and the Black American is this principle. We know that black Americans are all from black Africans, but black Americans are selected from the best of black Africans. Why? Because to become a black American, you have to go through four layers of screening.
First, slave trader screening. In order to obtain huge profits, slave traders can get the greatest benefits, so they often choose those who are physically strong and have better intelligence, which is the first layer of screening. The second layer of screening, ocean screening. The process of transporting black slaves from Africa to the Americas was fraught with the greatest dangers, so many times, as many as half of the blacks died on the road, and only a small half of them successfully reached the Americas, all of whom were better physically.
The third screening, that was the American screening. Black slaves who reached the Americas were generally concentrated on the island of Haiti and then shipped to the United States for sale. And in order to sell high prices, so here are those smart and strong selected, sent to the United States, poor stupid left in Haiti, now know why Haiti is so turbulent!
The fourth layer of screening, that is, labor screening, slaves that are very difficult, basically have to work 12 to 20 hours a day, and they have to be whipped and even killed at every turn, so they can survive until the American Civil War, the blacks who are emancipated by slaves. So we see that the reason why black people in the United States are the smartest is actually very simple, because they are excellent people in black people, smart people, which is the most core reason.
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Reference: Modern and Contemporary World History.