In my opinion, I don’t think that the KKK should be allowed to exist because they are so cruel. They frightened and physically hurt black people. The KKK didn't want black people to have equal rights. They have used intimidation, violence, and murder to maintain white supremacy in Southern government and social life.
The most important geographical feature was water.
His steel company dominated the U.S. steel market because it made good steel at low expenses. That was possible because he used high-quality equipment and gave workers low wages. He helped to make U.S steel some of the best in the world.
The doctrine of popular sovereignty was used. That meant that people in those states could choose to vote to support slavery and since they were majority then slavery would be permitted. There were even states that were at first non-slave states but then things changed and they voted to introduce slavery into the state and people voted for this and supported this.
The eastern neighbors had been converted to Christianity with the reign of the Byzantine Empire. Cyrillic alphabets were introduced and developed in the regions. Scientific knowledge were also transferred to the eastern neighbors during the Middle Ages.