`` `` the main finding of this article is that net internal migration to the core regions in the countries of the developed world , which subsided in the 1970s , increased in the 1980s , although not to the level of the 1960s . in some countries of northwest europe there is a balance now in net flows between core and periphery . in the countries of the periphery of europe and japan net internal migration to the core regions increased slightly in the 1980s . net migration flows to the periphery have completely reversed in canada , and net flows out of the core regions of the united states have been significantly reduced . in eastern europe , however , there is still moderate net migration to the core regions without any interruption as seen in western europe , north america , and japan . in south korea and taiwan rates of net migration to the core regions have been reduced from their high levels of the 1970s , but they are still quite high and show no clear sign of a break from the past . '' ''
C0041703
united state
C0028405
nort