The location of a command post from where the first Great Khan staged his invasions has been the subject of lengthy debate among historians and archaeologists alike for decades. But, according to a new study from the Australian National University and the Mongolian Institute of Archaeology, researchers have found the 13th-century ruler's "ordu" or base camp. Avraga, a Mongol Empire site located along the Avraga River in east-central Mongolia, was one of four outposts used to strengthen what would become the largest contiguous empire in history, according to the paper published in the peer-reviewed Archaeological Research in Asia. Dr Li...