why does white people are in europe and black in africa??

Answer 1

This isn't so much a question of history as it is one of evolution.

In the northern areas of the world, like Sweden, where the sunlight is weaker, humanity evolved without need for protection from the sun. This is why Swedes are typically fair skinned and often have lighter hair color,

But in areas of the world closer to the equator where it was warmer, hotter and the sunlight was more severe, darker skin evolved as a defense mechanism against the harsh burning of the sun in that climate.

Answer 2

The answer about evolution is correct. One factor not mentioned is Vitamin D. This is the one vitamin that can be manufactured by the body directly from exposure to sunlight. It takes six times more sunlight for a dark skinned individuals body to make the required Vitamin D than it does for a pale skinned person. No problem in the tropics and sub tropical areas, but potentially an issue during the long dark winters nearer to the poles. Melanin is required to protect the skin from harmful UV rays. Again, that is not such a great requirement in the higher latitudes.

Answer 3

Because africa lies on equator where sun showers UV rays maximum and it is melanin a pigment in skin which prevent us from it and it provides black colour to skin.

Answer 4

if you slice the planet into three going down from top to bottom everyone that lives in the middle slice will be darker than those in the outer slices.the middle slice is nearest to the sun also.