Liberal teachers, Marxists, Communists, socialists are not teaching true American history. They teach the warts, but not the good stuff. Slavery didn't start in America, it ended in America. Last continent to get slaves, and we ended it. When Rome fell half the empire were slaves. The barbarians freed them, so Rome fell quickly. These were mostly white slaves. Most black slaves were captured by their own kind or Arab slave traders and sold to European powers to use them in North and South American plantations. It irritates me that some American blacks will convert to Islam knowing Arabs are the ones who made slaves out of their ancestors.