<em>African Americans already were secluded from many things. In the past, the government had separated African Americans from clean bathrooms, certain restaurants, and certain prestige schools.</em>
There are several ways in which the Chinese government reacted to demands for democratic reform, but most of them were violent suppressions of protests.
The Roman empire was well organized with good roads & active trade, so the new religion could spread easily. Constantine was a sun worshipper who feigned Christianity so he could take control and throw out it's one and only goal