Ariq Böke
Mönghe Khan died in 1259, without leaving behind a son. The Kuriltai of 1260 elected Ariq Böke, the youngest brother of Mönghe Khan, as Great Khan. The same year, Mönghe Khan's first younger brother Kublai, who was warring in China to conquer the Song Dynasty, elevated himself into Great Khan in city Shangdu (or known as Kaiping). The Toluid Civil War was fought between the two brothers from 1261 to 1264 until Ariq Böke surrendered.