The empire that Ayurbarwada Buyantu Khan was the eighth Great Khan originated where?
Mongol Empire The Mongol Empire (Mongolian: "Mongolyn Ezent Güren"    ; Mongolian Cyrillic: Монголын эзэнт гүрэн; ] ; also Орда ("Horde") in Russian chronicles) existed during the 13th and 14th centuries and was the largest contiguous land empire in history. Originating in the steppes of Central Asia, the Mongol Empire eventually stretched from Eastern Europe to the Sea of Japan, extending northwards into Siberia, eastwards and southwards into the Indian subcontinent, Indochina, and the Iranian plateau, and westwards as far as the Levant.
Greater Iran Greater Iran (Persian: ایران بزرگ‎ ‎ , "Irān-e Bozorg"), also referred to as Greater Persia (سرزمین پارس , "Sarzamin-e Pārs"), is a term used to refer to the regions of the Caucasus, West Asia, Central Asia, and parts of South Asia that has significant Iranian cultural influence due to having been either long historically ruled by the various Iranian (Persian) empires (such as those of the Medes, Achaemenids, Parthians, Sassanians, Samanids, Safavids, and Afsharids and the Qajar Empire), having considerable aspects of Persian culture due to extensive contact with the various Empires based in Persia (e.g., those regions and peoples in the North Caucasus that were not under direct Iranian rule), or are simply nowadays still inhabited by a significant amount of Iranic peoples who patronize their respective cultures (as it goes for the western parts of South Asia, Bahrain and China). It roughly corresponds to the territory on the Iranian plateau and its bordering plains. The Encyclopædia Iranica uses the term "Iranian Cultural Continent" for this region.