Cultural integration of immigrants is inhibited by non-acceptance of such immigrants by the original community. Finding themselves in an unequal position and their opportunities limited by discrimination and the law, immigrants may cling to their separatism and original 'nationality' as their sole means of strength and unity. However, the maintenance of a separate cultural identity by immigrants causes friction or conflict with the national majority, aggravating discrimination, segregation, and the refusal by the latter to accept any vestiges of the new culture.
Every decade newer immigrants are thought difficult to assimilate in contrast to earlier immigrants. But in each decade the immigrants have adjusted quickly both economically and culturally. Within a decade or two, immigrants tend to earn more than nationals with similar educational characteristics.
The Encyclopedia of World Problems and Human Potential is a collaboration between UIA and Mankind 2000, started in 1972. It is the result of an ambitious effort to collect and present information on the problems with which humanity is confronted, as well as the challenges such problems pose to concept formation, values and development strategies. Problems included are those identified in international periodicals but especially in the documents of some 60,000 international non-profit organizations, profiled in the Yearbook of International Organizations.
The Encyclopedia includes problems which such groups choose to perceive and act upon, whether or not their existence is denied by others claiming greater expertise. Indeed such claims and counter-claims figure in many of the problem descriptions in order to reflect the often paralyzing dynamics of international debate. In the light of the interdependence demonstrated among world problems in every sector, emphasis is placed on the need for approaches which are sufficiently complex to encompass the factions, conflicts and rival worldviews that undermine collective initiative towards a promising future.
Non-profit, apolitical, independent, and non-governmental in nature, the UIA has been a pioneer in the research, monitoring and provision of information on international organizations, international associations and their global challenges since 1907.