Why half black half white still called black?

Question

I am wondering why people who are born from white and black parents still called black. Sometimes even when they are only 1/3 or 1/4 black they are still called black.

In: Biology

Answer 1

For the purposes of expanding the restricted class, the [One drop rule](https://en.wikipedia.org/wiki/One-drop_rule) was established.

The idea is to make as much rightless people as possible to expand pool of slaves.