The leading causes of the great migration were racial segregation and very poor economic conditions. The people who escaped that had to look elsewhere for a better economic base and a more tolerant society than in the south where Jim Crow laws were upheld. It is hard to say which push factor was stronger in this case because the terror was combined with very poor living conditions and the whole situation of black folks in the south was very bad.
Napoleon, while a dictator, did have a following of supporters. The memories of a long and bloody revolution were still too fresh and those who opposed Napoleon did not want to see another war breakout among the French people. They had hoped that, though he was alive, Napoleon would have little influence on France while in exile.
This was the result of Byzantine culture. It was in the Byzantine Empire that the
Orthodox Church was established. They adopted the Greek alphabet and it spread
through their missionary work. Many
Eastern European countries adopted the East Orthodox Church among them was
Russia.