Where do all the blacks in America come from? Why are Americans so tall? Many American basketball players are black.

Britain sold slaves to stay in the North American colonies.

People in many places in America are not very tall. Some countries in northern Europe are relatively high, such as the Netherlands, where men 190 and women 170.

There are many black people in America and they are developed. NBA has a long history, and American basketball culture has a long history. Black people are generally physically strong and are born with poor learning. Maybe music and sports can make black people change their destiny. Many black people have been playing in slums since childhood, and some talented people have gradually appeared.

Black people have thick upper limbs and thin calves, which are suitable for playing basketball. We have thin upper limbs, thick calves, stable center of gravity and better table tennis.