Jochi

Jochi commanded a Mongol army during the invasion of the Khwarezmian Empire. He led campaigns in the northern regions, capturing cities such as Jand and Yangikent, and securing the Syr Darya basin for the Mongols.

Jochi's legitimacy as Genghis Khan's eldest son was questioned by his brothers, particularly Chagatai. This dispute led to Jochi being passed over for succession, with Ogedei chosen as Great Khan instead, fueling tensions.

After Genghis Khan's death, Jochi's sons inherited his territories in the western Mongol Empire, forming the Jochi Ulus, which later became the Golden Horde. Jochi himself died before Genghis, so his sons ruled in his stead.