What has history taught us about race and race relations in the U. S., and why, ultimately should we care?

The history about the issue race in the US on the olden times were really bad. they're Racist and look on black as dirty or low because of their skin color. it's saying that we should care about it and learn the lesson not to be a racist but to spread love to everyone that. In this way we can unite the world and remake it as a comfortable and good home to live

answer; ///i do believe that the correct answer is (d); ///athens had a small population;

answer; i believe that the correct answer is (chronological order);