younger brother, who ruled briefly in Kiev while Andrey continued to rule his realm from Suzdal. In 1299, in the wake of the Mongol invasion, the metropolitan moved from Kiev to the city of Vladimir and Vladimir-Suzdal. Southwest To the southwest, the Principality of Halych had developed trade relations with its Polish, Hungarian and Lithuanian neighbours and emerged as the local successor to Kievan Rus'. In 1199, Prince Roman Mstislavych united the two previously separate principalities of Halych and Volhynia. In 1202 he conquered Kiev, and assumed the title of Knyaz of Kievan Rus', which was held by the rulers of Vladimir-Suzdal since 1169. His son Danylo () looked for support from the West. He accepted a crown as a "Rex Rusiae" ("King of Rus") from the Roman papacy, apparently doing so without breaking with Constantinople. In 1370, the patriarch of the Eastern Orthodox Church in Constantinople granted the King of Poland a metropolitan for his Ruthenian subjects. Lithuanian rulers also requested and received a metropolitan for Novagrudok shortly afterwards. Cyprian, a candidate pushed by the Lithuanian rulers, became Metropolitan of Kiev in 1375 and metropolitan of Moscow in 1382; this way the church in the territory of former Kievan Rus' was reunited for some time. In 1439, Kiev became the seat of a separate "Metropolitan of Kiev, Halych and all Rus'" for all Greek Orthodox Christians under Polish-Lithuanian rule. However, a long and unsuccessful struggle against the Mongols combined with internal opposition to the prince and foreign intervention weakened Galicia-Volhynia. With the end of the Mstislavich branch of the Rurikids in the mid-14th century, Galicia-Volhynia ceased to exist; Poland conquered Halych; Lithuania took Volhynia, including Kiev, conquered by Gediminas in 1321 ending the rule of Rurikids in the city. Lithuanian rulers then assumed the title over Ruthenia. Final disintegration Following the Mongol invasion of Cumania (or the Kipchaks), in which case many Cuman rulers fled to Rus', such as Köten, the state finally disintegrated under the pressure of the Mongol invasion of Rus', fragmenting it into successor principalities who paid tribute to the Golden Horde (the so-called Tatar Yoke). Just prior to the Mongol invasion, Kievan Rus had been a relatively prosperous region. International trade as well as skilled artisans flourished, while its farms produced enough to feed the urban population. After the invasion of the late 1230s, the economy shattered, and its population were either slaughtered or sold