【Abstract】 In the 1970s, American suburban population exceeded that of the central cities a nd rural areas respectively, thus the United States became the first and most su burban country. The dynamics that promoted this country to become suburban one m ainly include: the progress of technology, such as transportation, communication and energy, the change of American economy as the greatest impetus; American ho using policy which transformed the trickle of suburbanization into a series of massive waves; and the Great Migration and urbanization of blacks has intensifie d the conflicts between the black and the white, so the whites turned to suburbs to seek homogeneous communities. 

 ——《World History》(01),2003