Why are there so many black people among American basketball players?

First of all, there are more blacks in America (relatively speaking)! The United States has the largest number of blacks outside Africa.

Secondly, blacks have good physical qualities, such as jumping, speed, strength, flexibility and agility, which are generally superior to other races;

Moreover, most African-Americans are poor and spend less money playing basketball. Many African Americans have played basketball since childhood, and many people regard playing basketball as a shortcut to get rid of poverty!

Fourthly, most black basketball players in America come from streetball, which is more popular in America.

Fifth, other races are not good at playing basketball!