Weakening of the Tatar Yoke (1430s)

Name: Weakening of the Tatar Yoke (1430s)
Start: 1431
End: 1440

Type Event Region Eastern Europe Time 1431–1440

In the 1430s the Golden Horde split into the Kazan, Crimean, Great Horde, and other khanates;…

Timeline

1431–1435Sarai · Volga regionCivil war within the Golden Horde split it into multiple rival polities, destroying its capacity to collect tribute centrally. Moscow exploited the chaos to suspend tribute or pay only one khanate, and the Tatar Yoke's political constraints weakened markedly.
1436–1438Moscow · RussiaMoscow's forces repeatedly defeated Tatar raiding bands on the eastern frontier, showing that Rus' military power could now match khanate armies in local engagements and no longer relied solely on tribute to purchase peace.
1439–1440Nizhny Novgorod · RussiaKazan khan Ulugh Muhammad led an army against Nizhny Novgorod but was repelled by Moscow's reinforcements. The battle showed the emerging Kazan Khanate could not restore unified suzerainty over Rus', and the Tatar Yoke became further a mere name.

Encyclopaedia Britannica: Golden Horde https://www.britannica.com/place/Golden-Horde
The Cambridge History of Russia, Volume 1 — Maureen Perrie (2006)