ABSTRACT This study examines the diplomatic and political efforts made by Florence to establish a significant institutional presence in Constantinople. It explores Florence's diplomatic relations with the Byzantine Empire, which are analysed in three distinct phases: the first, from the aftermath of the Fourth Crusade in 1204; the second, from 1421 to 1434, following the arrival of the Medici; and the third, from 1434, including the Ecumenical Council, to the fall of Constantinople in 1453. The research aims to provide an historical narrative and a comprehensive study of the origins and development of political contacts between Florence and the Byzantine Empire, an enquiry into the Florentine privileges granted in 1439, and a critical discussion of the genuine presence of a Florentine colony in the Byzantine capital.
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