They are believed to have descended from Asians who crossed the Bering land bridge during the last [[Ice Age]].{{fact}} Those who are only partly descended from those early inhabitants are still considered American Indians if they maintain tribal affiliation or community attachment. | They are believed to have descended from Asians who crossed the Bering land bridge during the last [[Ice Age]].{{fact}} Those who are only partly descended from those early inhabitants are still considered American Indians if they maintain tribal affiliation or community attachment. |