Trebizond

Timeline

1. 1451–1452Trebizond · Trebizond ProvinceIn 1451 the Trebizond Empire under the Komnenos dynasty maintained nominal independence, paying annual tribute to the Ottoman sultan in exchange for peace. Its territory was confined to a narrow strip on the Black Sea's southern coast, sustained by rugged terrain and trade revenues (especially transit duties on Persian silk). News of Mehmed II's accession reached the court, which recognized the graver situation and began secretly assessing diplomatic options.
2. 1453–1455Trebizond · Trebizond ProvinceAfter the fall of Constantinople on 29 May 1453, Trebizond became the only surviving independent Byzantine successor state, drawing wide attention in the Christian world. Exiled scholars and Byzantine nobles brought manuscripts and icons to take refuge, briefly making the city the last haven of Greek culture. Yet the empire's finances were weak and its standing army extremely limited, leaving its defenses against Ottoman expansion inherently fragile.
3. 1458–1460Trebizond · Trebizond ProvinceAfter John IV died in 1458, his brother David Komnenos succeeded and immediately launched a intensive diplomatic offensive: sending envoys to the papacy, Venice, Georgia, the Karamanids, and Persia's Aq Qoyunlu dynasty to seek an anti-Ottoman alliance. After conquering the Peloponnese (1460), Mehmed II fixed his sights on Trebizond. David's diplomatic efforts ultimately came to nothing, the empire fell into isolation, and when the Ottoman army reached the walls in 1461, David chose to surrender without a fight.