Lifetime migration to the major cities of the United States, Asia, and Africa.

"The purpose of this paper is to compare and contrast the lifetime migration patterns into the major cities of selected developed and developing countries. This study was confined to cities in...the United States and certain Asian and African countries with relevant published data.... This paper has shown that some lifetime population movements were exceptionally high. Two-thirds of the residents of the major U.S. cities in 1970 were born elsewhere. The major cities in sub-Saharan Africa were second highest with 60 percent. Asian cities followed with 48 percent of their residents being lifetime migrants and the cities of North Africa were lowest with less than a third. Finally, the native population born and reared in most urban agglomerations will probably comprise a larger percentage of the total population in those areas in the future." (SUMMARY IN FRE AND ITA)