Khan (sometimes spelled as Xan, Han, Ke-Han) is a title for a sovereign or military ruler in the Mongolian and Turkic languages. It was originally just the title for a tribal leader before the Mongols and Turks brought it to the rest of Asia. It now has many equivalent meanings such as commander, leader, or ruler. Presently Khans exist mostly in South Asia, Central Asia and Iran. The female alternative are Khatun, Khatan and Khanum. Various Mongolic, Turkic and Hunnic peoples from Central Asia had given the title new prominence after the Mongol invasion and later brought the title "Khan" into Afghanistan and Northern India, which later was adopted by locals in the country as a name. Khagan is rendered as Khan of Khans and was the title of Genghis Khan and the other Khagans (his direct male descendants)