in 1389 In 1397, Edigu allied himself with
Timur-Qutlugh and was appointed as general and commander-in-chief of the
Golden Horde armies. In 1399, he inflicted a crushing defeat on
Tokhtamysh and
Vytautas of Lithuania at the
Battle of the Vorskla River. Tokhtamysh definitively lost the throne and fled to
Siberia. Thereupon Edigu managed to unite under his rule all
Jochi's lands, albeit for the last time in history. Tokhtamysh never ceded his claim, and by 1405,
Timur had agreed to support him again. After Timur's death the same year, Edigu's authority increased in the
Mangyshlak Peninsula and the area south of the
Aral Sea; he also took control of
Khwarazm, which he ruled until 1412. He remained in control of the core territories of the Golden Horde and deposed Timur-Qutlugh, replacing him with a more loyal khan. In 1406, Edigu located his old enemy Tokhtamysh in Siberia. Edigu's agents killed Tokhtamysh. The following year he raided
Volga Bulgaria. In 1408, he staged a destructive Tatar invasion of Russia due to tribute not being paid in several decades, leading to
Vasily I of Moscow to end his fighting against Lithuania. Edigu burned
Nizhny Novgorod,
Rostov,
Serpukhov and other towns, and then laid siege to
Moscow. Edigu summoned troops from Tver, but the prince made sure his soldiers would arrive too late to be of any use. Instead of taking Moscow, Edigu contented himself with extracting a ransom from its inhabitants before returning to the steppe. Due to him being engaged in multiple conflicts, by 1412–1413, Edigu had lost control of
Astrakhan,
Bolghar,
Crimea, and
Sarai, leading him to seek refuge in Khwarezm and ally himself with the
Timurid ruler
Shah Rukh. Though he had previously had relations with Shah Rukh, including marrying his daughter to the latter's son,
Muhammad Juki, Edigu lost a series of battles against
Timur, son of Timur-Qutlugh, and
Jalal al-Din, son of Tokhtamysh, leading Shah Rukh to expel him from Khwarazm. Within a few years, he controlled only the original Manghit homeland – an area consisting of the lower Ural River and the north-eastern shores of the
Caspian Sea. Despite this, Edigu was still militarily active and he managed to continuously ravage
Kiev under Lithuanian rule; he was able to burn down the
Pechersk Monastery and the old town in 1416, but was unable to capture its castle. In 1418, he offered Vytautas peace and alliance against Tokhtamysh's sons. He also sometimes controlled the regions of
Derbent, Sarai, and
Xacitarxan, as some coins that were minted bore his name. In 1419, he was assassinated by one of Tokhtamysh's sons.
Qadir Berdi, the last surviving son of Tokhtamysh, established himself in Crimea and managed to lead a campaign deep into Manghit territory, where he fought against Edigu and managed to kill him. Qadir Berdi was wounded and died shortly after. After his death, Edigu came to be regarded as the founder of the Manghit
ulus, later known as the
Nogai Horde. Edigu's dynasty in the Nogai Horde continued for about two centuries, until his last descendants moved to Moscow, where they were baptized and became known as Princes
Urusov and
Yusupov. ==Assessment==