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 easiest of achievement by the Village Indians from the nearness to each other of their pueblos and from the smallness of their areas; but it was accomplished in occasional instances by tribes in the Lower Status of barbarism, and notably by the Iroquois. Wherever a confederacy was formed it would of itself evince the superior intelligence of the people.

The two highest examples of Indian confederacies in North America were those of the Iroquois and of the Aztecs. From their acknowledged superiority as military powers, and from their geographical positions, these confederacies in both cases produced remarkable results. Our knowledge of the structure and principles of the former is definite and complete, while of the latter it is far from satisfactory. The Aztec Confederacy has been handled in such a manner historically as to leave it doubtful whether it was simply a league of three kindred tribes, offensive and defensive, or a systematic confederacy like that of the Iroquois. That which is true of the latter was probably in a general sense true of the former, so that a knowledge of one will tend to elucidate the other.

The conditions under which confederacies spring into being and the principles on which they are formed are remarkably simple. They grow naturally with time out of pre-existing elements. Where one tribe had divided into several, and these subdivisions occupied independent but contiguous territories, the confederacy reintegrated them in a higher organization on the basis of the common gentes they possessed and of the affiliated dialects they spoke. The sentiment of kin embodied in the gens, the common lineage of the gentes, and their dialects, still mutually intelligible, yielded the material elements for a confederation. The confederacy, therefore, had the gentes for its basis and center, and stock language for its circumference. No one has been found that reached beyond the bounds of the dialects of a common language. If this natural barrier had been crossed it would have forced heterogeneous elements into the organization. Cases have occurred where the remains of a tribe, not cognate in speech, as the Natchez, have been admitted into an existing confederacy; but this exception would not invalidate the general proposition. It was impossible for an Indian power to arise upon the American continent through a