How did races develop?

Question

How did races such as the Chinese, African Americans, African Americans, Hispanics, etc. come to be?

When humanity was born wasn't there only 1 race (the homosapiens)? How did races develop?

How did racism develop?

Links would be appreciated.

Answer 1

culture, and racism. other influences.

Answer 2

I can tell you about Asian eyes.

Scientist believe Asian eyes are shaped that way as a mechanism to block light from the reflection from snow on the ground.

Different skin color possible developed from the intensity of the sun in a certain area. Darker skin can protect the person from intense exposure to the sun. Note: Dark-skinned people have lower rates of skin cancer which can be from overexposure of UV rays from the sun.

Humans develop (evolve) according to what is needed to adapt in a certain environment. This, of course, happens over many generations by selection.

Racism?

When someone convinces himself that his race is better in some way than another race. Stereotypes are then formed.

Answer 3

The people up north with minimum sun light developed light skin,the people in affrica and austrailia under the sun became verry dark,the people in aisia had the sun on the horizon and became yellow and squinted eyes.