During the 13th and 14th centuries, the Mongols launched two long, massive invasions of the territory of modern Chechnya and Ingushetia, which included the lands of Alania in the west, Simsir in the northeast, and the Georgian-allied polity of Durdzuketia in the south.[2][failed verification][3][4] They caused massive destruction and human death for the Durdzuks, but also greatly shaped the people they became afterward. However, this came at great cost to them, and the states they had built were utterly destroyed, as were their previous organized systems. These invasions are among the most significant occurrences in Chechen and Ingush history, and have had long-ranging effects on Chechnya, Ingushetia and their peoples.