Whites moved to the suburbs, leaving blacks and other minorities in the cities is the pattern of segregation emerged during the postwar era.
Explanation:
After the world war 2, the whites moved to the suburbs new housing and in order to start their new lives. The roads served to transport the suburbs to their city jobs, development of the suburbs, and move the base away from the city.
The cities had been destroyed due to the war and there was lot of population which were hampering their lives. Th struggle became more for the people. Thus to start their new lives in new houses they moved to the suburbs.
The colonist were free to set up their own government and laws, but, this would cause a war with Britain, lives would be lost and if the colonist lost the war, they could be charged with treason.