Latin Emperors at Constantinople. In addition, the disintegration of the Byzantine Empire allowed the Bulgarians, the Serbs and the various Turcoman emirates of Anatolia to make gains. Although Epirus was initially the strongest of the three Greek states, the Nicaeans were the ones who succeeded in taking back the city of Constantinople from the Latin Empire. The Nicaean Empire was successful in holding its own against its Latin and Seljuk opponents. At the Battle of Meander Valley, a Turkic force was repelled and an earlier assault on Nicaea led to the death of the Seljuk Sultan. In the west, the Latins were unable to expand into Anatolia; consolidating Thrace against Bulgaria was a challenge that kept the Latins occupied for the duration of the Latin Empire. In 1261, the Empire of Nicaea was ruled by John IV Laskaris, a boy of ten years. However, John IV was overshadowed by his co-emperor, Michael VIII Palaiologos. Palaiologos was a leading noble of military standing and the main figure of the regency of John IV, who had used this role to propel himself to the throne, and set the stage for his becoming sole Emperor of the restored Byzantine Empire. Michael VIII Palaiologos, 1261–1282 In 1261, while the bulk of the Latin Empire's military forces were absent from Constantinople, the Byzantine General Alexios Strategopoulos used the opportunity to seize the city with 600 troops. Thrace, Macedonia and Thessalonica had already been taken by Nicaea in 1246. Following the capture of Constantinople, Michael ordered the blinding of John IV in December 1261, so as to become sole emperor. As a result, Patriarch Arsenios excommunicated Michael, but he was deposed and replaced by Joseph I. Restoration of Constantinople The Fourth Crusade and their successors, the Latin Empire, had done much to reduce Byzantium's finest city to an underpopulated wreck. Michael VIII began the task of restoring many monasteries, public buildings and defence works. The Hagia Sophia, looted in the Crusade of 1204, was refurbished to Greek Orthodox tradition. The Kontoskalion harbour and the walls of Constantinople were all strengthened against a possible new expedition by the Latin West. Many hospitals, hospices, markets, baths, streets and churches were built, some with private patronage. Even a new Mosque was built to compensate for the one burnt during the Fourth Crusade. These attempts were costly and crippling taxes were placed on the peasantry. Nonetheless, the city grew new