The answer is ethnic group.
This is when they share common traits such as their nationality,
ancestry, culture and shared religion, language as well as other
characteristics. There are times when
some leave one ethnic group and join others. This can be seen when they go to
other places and settle there.
Okay, this just goes back to the civil war. one difference between the northern and southern was the idea of slavery.
Answer:
black and white and your's dude