"The main problem facing immigrant communities was to change the sort of sociability they practiced from an ascriptive to a voluntary form. That is, the traditional social structures they brought with them were based on family, ethnicity, geographic origin, or some other characteristic with which they were born. For the first generation that landed in the United States, they created the trust necessary for revolving credit associations, family restaurants, laundries, and grocery stores. But in subsequent generations they could become a constraint, narrowing the range of business opportunities and keeping descendants in ethnic ghettoes. For the most successful ethnic groups, the sons and daughters of first-generation immigrants had to learn a broader kind of sociability that would get them jobs in the mainstream business world or in the professions. The speed with which immigrants could make the transition from a member of an ethnic enclave to assimilated mainstream American explains how the United States could be both ethnically diverse and strongly disposed to community at the same time. In many other societies, the descendants of immigrants were never permitted to leave their ethnic ghetto. Although solidarity within the ethnic enclave remained high, the society as a whole was balkanized and conflicted. Diversity can have clear benefits for a society, but is better taken in small sips than in large gulps. It is easily possible to have too diverse a society, in which people not only fail to share higher values and aspirations but even fail to speak the same language. The possibilities for spontaneous sociability then begin to flow only within the cleavage lines established by race, ethnicity, language, and the like. Assimilation through language policy and education must balance ethnicity if broader community is to be possible. The United States presents a mixed and changing picture. If we take into account factors like America's religious culture and ethnicity, there are ample grounds for categorizing it simultaneously as both an individualistic and a group-oriented society. Those who see only the individualism are ignoring a critical part of American social history. "Yet the balance has been shifting toward individualism rapidly in the last couple of decades, so it is perhaps no accident that Asians and others see it as the epitome of an individualistic society. This shift has created numerous problems for the United States, many of which will play themselves out in the economic sphere."