Confederation for defense and offense was fairly defined and was strengthened by intermarriage between tribes and gentes and the prohibition of marriage within the gens; yet the organization was such as to maintain tribal autonomy in considerable degree; i.e., the social structure was such as to facilitate union in time of war and division into small groups adapted to hunting in times of peace. No indication of feudalism has been found in the stock. The government was autocratic, largely by military leaders sometimes (particularly in peace) advised by the elders and priests; the leadership was determined primarily by ability—prowess in war and the chase and wisdom in the council,—and was thus hereditary only a little further than characteristics were inherited; indeed, excepting slight recognition of the divinity that doth hedge about a king, the leaders were practically self-chosen, arising gradually to the level determined by their abilities. The germ of theocracy was fairly developed, and apparently burgeoned vigorously during each period of peace, only to be checked and withered during the ensuing war when the shamans and their craft were forced into the background. During recent years, since the tribes began to yield to the domination of the peace-loving whites, the government and election are determined chiefly by kinship, as appears from Dorsey’s researches; yet definite traces of the militant organization appear, and any man can win name and rank in his gens, tribe, or confederacy by bravery or generosity. The institutional connection between the Siouan tribes of the plains and those of the Atlantic slope and the Gulf coast is completely lost, and it is doubtful whether the several branches have ever been united in a single confederation (or "nation," in the language of the pioneers), at least since the division in the Appalachian region perhaps five or ten centuries ago. Since this division the tribes have separated widely, and some of the bloodiest wars of the region in the historic period have been between Siouan tribes; the most extensive union possessing the slightest claim to federal organization was the great Dakota confederacy, which was grown into instability and partial disruption; and most of the tribal unions and coalitions were of temporary character.