The Frame of Reference to give direction to the further evolution of life and institutions in the United States . 4. Along with traditions of the past, including not only American ideals of popular democracy and of personal liberty and dignity but also many other elements in the heritage of civilization-intellectual, xsthetic, and ethical-which can confidently be expected to endure and hence to continue to exercise a profound influence on American life in the proximate future, there are certain clearly defined trends in contemporary technology, economy, and society of the utmost importance in creating new conditions, fashioning novel traditions, reorienting American life,' and thus conditioning any future program of -11 social science instruction . 5. The most striking trend in American life to-day, and one which has become gradually-more discernible over a fairly long period, is a twofold tendency toward the closer physical unification of the nation and the ever-closer integration and interdependence of all branches of economy,, social activity, and culture . Although this trend has not been uniform in the various branches or divi-
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