No, diversity in this nation didn't start in the 1800's.  Diversity in this nation is a big problem.  I said, "And yes, before the Europeans arrived, the tribes were not one."

Yes, there's good from diversity.  But this nation struggles with it.  Always has.  Reading about Sayyid Qutb.  Right here in Greeley he was treated like garbage, and it prompted him to hate the West.  When I travel, I'm always met with a welcomeness I rarely see here.  Most of what we do is "those darn __________".  So, I'm saying for THIS country, diversity is as big a problem as it isn't, if not more so.  Just look at the in-fighting going on now.