Bayanchur Khan vs John II of Avesnes

Bayanchur Khan consolidated Uyghur control over the former Gokturk territories, establishing the Uyghur Khaganate as the dominant steppe power. He built a capital at Ordu-Baliq and organized the Uyghur state on a model combining steppe traditions with Chinese administrative practices.

Bayanchur Khan led campaigns against the Kyrgyz and Karluk tribes to secure the northern and western borders of the Uyghur Khaganate. He defeated these groups and incorporated them into the Uyghur confederation, expanding Uyghur territory.

Bayanchur Khan sent Uyghur cavalry to aid the Tang dynasty in suppressing the An Lushan Rebellion. The Uyghur forces helped recapture the Tang capital Chang'an and Luoyang, cementing the Uyghur-Tang alliance.

John II of Avesnes inherited the County of Hainaut from his mother Margaret II of Flanders, and later the County of Holland from his father John I of Avesnes. This united the two counties under the Avesnes dynasty.

John II of Avesnes was a candidate for the election of the King of the Romans (Holy Roman Emperor). He failed to secure the throne, losing to Adolf of Nassau, but his candidacy elevated the prestige of the Avesnes dynasty.

John II of Avesnes fought against the Dampierre faction in the War of the Flemish Succession. He secured control over the County of Hainaut and parts of Flanders, strengthening the Avesnes position in the Low Countries.