Meanwhile, the Kyrgyz and Uyghurs were struggling with one another and with the Chinese Empire. The Kyrgyz people ultimately settled in the region now referred to as Kyrgyzstan. The Batu hordes conquered the Volga Bulgars in what is today Tatarstan and Kypchaks in what is now Southern Russia, following the westward sweep of the Mongols in the 13th century. Other Bulgars settled in Europe in the 7-8th centuries, but were assimilated by the Slavs, giving the name to the Bulgarians and the Slavic Bulgarian language.