Taspar Qaghan vs Ulugh Muhammad

Taspar Qaghan succeeded his brother Muqan Qaghan as the fourth ruler of the First Turkic Khaganate. His reign marked the peak of the khaganate's power and territorial extent in Central Asia.

Taspar Qaghan converted to Buddhism and declared it the state religion of the Turkic Khaganate. He built monasteries and invited Buddhist monks from China, promoting the spread of Buddhism among the Turkic elite and along the Silk Road.

Taspar Qaghan maintained diplomatic relations with the Byzantine Empire, continuing the alliance initiated by his predecessors against the Sasanian Empire. This alliance facilitated trade and military cooperation between the two empires.

Taspar Qaghan died, leading to a succession crisis that split the First Turkic Khaganate into Eastern and Western halves. His death marked the end of the united khaganate and the beginning of internal conflicts.

Ulugh Muhammad, after losing the throne of the Golden Horde, established the independent Khanate of Kazan on the middle Volga. This created a new Tatar state that would be a major political and military power in the region for over a century.

Shortly after founding the Khanate, Ulugh Muhammad led a military campaign against the Grand Principality of Moscow. His forces raided the outskirts of Moscow, demonstrating the new khanate's military capability and securing tribute from the Russians.

Ulugh Muhammad's forces defeated a larger Russian army near Suzdal. The Russian Grand Prince Vasily II was captured. This victory forced Moscow to pay a large ransom and recognize Kazan's independence, solidifying the Khanate's position.