Apart from some ruins, some frontier territorial changes, and the increasing substitution of Mongol authority for local autonomy (which was both logical and unavoidable from the moment when the Mongols shattered the framework of the country, and broached its resources), a stable regime seemed to have been re-established with some kind of continuity with the previous period. But the history of the subsequent years was to show how fragile and shallow it was, and how the new forces which had seemed defeated came back almost without a crisis.