Treaty of Nymphaeum (1261)

The Treaty of Nymphaeum was a trade and defense pact signed between the Empire of Nicaea and the Republic of Genoa in Nymphaion in March 1261. This treaty would have a major impact on both the restored Byzantine Empire and the Republic of Genoa that would later dictate their histories for several centuries to come.

Source: Wikipedia — Treaty of Nymphaeum (1261) (CC BY-SA 4.0)