In which countries are blacks distributed?

Question 1: which countries are black, yellow and white? Mainly distributed in Africa.

Yellow people, also known as Asian Americans. Originated in East Asia and gradually spread to South Asia and Southeast Asia.

Caucasians, also known as Caucasians or Europeans, are the most widely distributed people in the world, among which Celts, Germans and Slavosubfamilies (Baltic type) are the representatives.

Mainly distributed in Europe, followed by Jews in North Africa, West Asia, Oceania and North America. In South America, Iberian Peninsula and other regions are the main branches, and the population ratio of South American countries is different. Among them, Argentina has the largest population, and Brazil has the largest number of whites in South America. Among them, Russia has the largest number of whites in the world.

Question 2: Where are the blacks in the world mainly distributed? Sub-Saharan Africa is the hometown of blacks. In addition, there are many blacks in the United States, most of whom were slaves sold to the United States by European colonists during the colonial period. Continue to live in America after freedom.

Question 3: Apart from Africa, where are blacks distributed?

Question 4: Apart from African countries, which countries in the world have black people/blacks mostly distributed in sub-Saharan Africa? Black people, like all ethnic groups of the yellow race, are divided into several ethnic groups. Their looks are different from what we imagined, so their customs are different. Their skin colors are also different, and most of them are from poor countries. /kloc-The slave trade since the 6th century has spread hundreds of millions of black people to the United States, which is the source of black people in the United States today. Some countries encourage blacks to marry other races, such as Brazil, and some countries have serious racial discrimination, such as the United States. There are also many black immigrants in Europe today. They have outstanding performance in the field of sports and high achievements in music. Now R&; B Music is dominated by black music! As for the yellow race, white people have their own history, and they can't tell for a while. Probably, the yellow race is mainly in East Asia, and there are also some Central Asians between the yellow race and the white race. Once in the United States, mainly yellow people, they are our blood relatives-Indians. However, since Columbus's so-called "discovery" of America, white people invaded Indian territory by bloody and violent means, so that today's American residents are mainly Spanish and other European descendants. Their descendants after marrying Indians are all mixed-race and beautiful, such as Mexicans, and Venezuela is a high-yield country of Miss World! Caucasians are white, Europeans are white, not the black people upstairs. The struggle and integration between them has a history of thousands of years. I suggest you read The General History of the World by American historian Stavri Anoos, which is easy to understand, detailed and neutral!

Question 5: Which country is black? Ethnicity refers to people who have formed in a certain area in history and have certain * * homogeneity characteristics in physique (including skin color, eyes, hair color and hairstyle, height, face shape, head shape, nose shape, blood type, hereditary diseases, etc.). People all over the world are usually divided into four races:

(1) Mongolian race, or yellow race, with yellow skin, straight hair, flat face, flat nose and wide nostrils;

(2) Caucasian or white. Fair-skinned, tall and narrow nose, various eye colors and hair types;

(3) Negroid or black, with dark skin, thick lips, wide nose and curly hair;

(4) Australians, or brown people, have brown or chocolate skin, dark brown curly hair, wide nose, well-developed beard and body hair.

So far, there is no consensus on the classification of modern races.

Race or race is a biological classification based on certain physical characteristics, not a cultural classification, and should be strictly distinguished from the concept of "nation". As a biological concept, race must see the following points: First of all, no race has one or some exclusive genes, and the difference between races is only the frequency of occurrence of one or some genes. For example, the frequency of IA[ allele that determines blood type is relatively high in European whites, while IB allele is relatively high in Asian yellow people. Allele Ii is relatively high in South American Indians. But they all have three alleles: Ii, IA and IB. Secondly, due to the existence of various intermediate types, there is no insurmountable boundary between various races. For example, Ethiopians and South Indians are between white and black, South Siberia and Urals are between white and yellow, and Qiandao people have the characteristics of white and yellow. We should also see that although under certain conditions, there are geographical isolation and cultural isolation between different groups of people, these have not led to reproductive isolation. Race is genetically "open", and different races can intermarry, and all can produce offspring with strong vitality. Humans are highly migratory species, and all kinds of isolation will be broken by the interaction brought about by migration. Therefore, any attempt to classify "pure" races is wrong.

People usually divide races according to physical characteristics such as skin color and nose shape, which is mainly caused by adaptation to the climate. The main factors causing the skin color difference are the distribution of blood vessels in a certain skin area and the amount of melanin. Melanin-rich skin is black, moderately yellow and rarely light. Melanin has the ability to absorb ultraviolet rays from the sun. Black people living across the equator in Africa and brown people living near the equator in the western Pacific have darker skin, which can prevent the skin from being damaged by excessive ultraviolet rays. Ultraviolet rays can produce vitamin D. Therefore, dark skin can prevent excessive production of vitamin D, leading to vitamin D poisoning. On the contrary, Caucasians used to live in northern Europe, where the sunlight is not as strong as near the equator. The ultraviolet rays in the sunlight will not cause harm to the body and can form the necessary vitamin D, so there are few pigments in the skin of Caucasians in northern Europe.

The same is true of the nose type. People living in tropical forests generally have large nostrils. The climate here is warm and humid, and the role of warm and humid air in the nose is not very important. White people living in high latitudes have long and prominent noses, which can help warm and moisten the air entering the lungs. The eye lines of the yellow race may be related to the climate in the sandstorm area of Central Asia. A flat face and a half-full fat layer can protect the face from frostbite.

These racial characteristics were formed in the stage of fossil homo sapiens. Due to the progress of human material culture, most national characteristics have long lost their adaptive significance. Today, a black man can live well in northern Europe at high latitudes. He doesn't need ultraviolet rays in the sun to produce vitamin D at all, but he can get the necessary vitamin D from food. White people can live well near the equator, with clothes, hats and houses.

The concept of race changes with time. 18th century naturalist Carol? Linnaeus divided modern people into seven races. He divided the races in the world into savage races ―― Fielas, monster races ―― Monstor Race, and rational races ――Sabines；; Rational species are further divided into four major races: white Europeans, yellow Asians, black Africans and red Americans. He claimed that Europeans have not only white skin but also blue eyes ... >>