Xianbei state
Mongolic-related Slab Grave cultural monuments are found in Baikal territory. The territory of Buryatia has been governed by the Xiongnu Empire (209 BC-93 CE) and Mongolian Xianbei state (93-234), Rouran Khaganate (330-555), Mongol Empire (1206-1368) and Northern Yuan (1368-1691).