Which two cities were the most popular destinations during the great migration?

The great Migration was the mass movement of about five million southern blacks to the north and west between 1915 and 1960. During the initial wave the majority of migrants moved to major northern cities such as Chicago, Illiniois, Detroit, Michigan, Pittsburgh, Pennsylvania, and New York, New York.

The purpose was that there should be no secret treaties between countries like the treaties that helped to cause WWI. It was called: Open Diplomacy. I hope this can help you a lot