The presidential was not part of the plan.
Wealthy industrialists knew how to invest and exploit the system which wasn't used to heavy industry so they amassed huge amounts of wealth through monopolies and trusts while the common person was struggling to survive and had to work in dreadful conditions. This led to many people starting to support socialist tendencies in order to improve their living standard and the way they were treated in the society.<span />
Generally it is true that loess deposits usually blanket an area in an even layer, although it should be noted that things like wind and rain patters can affect this distribution.
Women often married into different cultures, and then raised children by the standards of their old cultures. Also, with trade, people would purchase wares of different cultures, eventually becoming their own.