What continents are the yellow race, white race and black race distributed in? Analyze the reasons.

Black people are distributed in the tropical equatorial region of the African continent, with sub-Saharan Africa as the center.

The heart is also distributed in the New World, India and Sri Lanka, and blacks are divided into African blacks and Indian blacks.

Black people in the United States protect people's health because of the strong solar radiation and the dark skin with deep human pigment.

Protection, the African continent is the continent where the equatorial line of the earth passes through the middle, so the climate there is hot and slow.

Slowly, a black group was formed. It is worth mentioning that the distribution of black people is also related to human development.

Yes, in the17th century, the era of great navigation came, and European colonists carved up the African continent. however

Poor Africa could not bring wealth to European colonists, so the slave trade prevailed for two centuries, which

During this period, countless blacks were sold to farms all over the world, including Latin America, Australia and Europe.

In major areas, these blacks failed to return to their hometown-Africa.

Second, white people.

White people are mainly distributed in central and northern Europe. Due to the opening of new sea routes and the continuous expansion of western colonists, whites were brought to all parts of the world, including the Americas, Australia, India and many countries in West Asia in the East. White people can be divided into three parts: Aryans, Han people and Semites. Europeans live in areas with oblique sunlight, low illumination and ultraviolet rays, cold climate, cloudy days and few sunshine. Therefore, the melanin content of human skin color is relatively low, and the hair color and eye color are relatively light.

Third, the yellow race

Yellow people are mainly distributed in East Asia and Southeast Asia, and almost half of them are from China. The area where yellow people live is not as hot as Africa or as cold as Europe, but a relatively mild environment, so people's characteristics are relatively mild. Their skin is brown with egg yolk; Less body hair, straight and black hair; The eyes are brown, even wide and flat, and the forehead is wide; The nose is of medium height.