Today Central Asians are a mixture of various peoples, such as Mongols, Turks, and Iranians. The Mongol conquest of Central Asia in the 13th century resulted in the mass killings of the Iranian-speaking people and Indo-Europeans population of the region, their culture and languages being superseded by that of the Mongolian-Turkic peoples. The invasions of Bukhara, Samarkand, Urgench and others resulted in mass murders and unprecedented destruction, such as portions of Khwarezmia being completely razed. The remaining surviving population were either displaced or assimilated with intermarriage with invaders. Genetic studies indicates all Central Asian ethnicities share a various genetic mixture of East Eurasian and West Eurasian.