 Complete the following phrase:  Thessaloniki passed out of Byzantine hands in 1204, when Constantinople was captured by the Fourth Crusade. Thessaloniki and its surrounding territory  the Kingdom of Thessalonica  became the largest fief of the Latin Empire, covering most of north and central Greece. The city was given by emperor Baldwin I to his rival Boniface of Montferrat, but was seized back once more in 1224 by Theodore Komnenos Doukas, the Greek ruler of Epirus, who established the Empire of Thessalonica. After the 