My students missed 2 or 3 on average. I pass it along for your amusement.
Anthropology provides evidence that all human beings are black.
Race is a biological and scientific concept and does not change over time or vary from society to society. Race and Racism have been around since the beginning of time and will continue to exist as long as there are multiracial societies. Race and Racism didn't fully emerge until the 18thc. Racism has always been more of a problem in the Southern US than in the other regions. Racism does not explain the cause of slavery in America, but rather the other way around.