''Kyrgyz'' is believed to have been derived from the Turkic word for "forty", about the forty clans of Manas, a legendary hero who united forty regional clans against the Uyghurs. Literally, Kyrgyz means "We are forty". At the time, in the early 9th century AD, the Uyghurs dominated much of Central Asia (including Kyrgyzstan), Mongolia, and parts of modern-day Russia and China. ''-Stan'' is a suffix in Persian meaning "place of" or "country".