 They each have their own effects, but also may cause and reinforce each other's existence.In the same way some regions of the world have so called "brain drain", or the loss of wealthy, skilled, and educated individuals and their families to other countries through immigration, rural and inner city regions of the United States experience brain drain to sub-urban regions.It has been shown that people become more likely to leave rural areas as their education level increases and less likely as they increase in age.