Genoa-Pisa Maritime Rivalry

Timeline

1. 1161–1165Sardinia · SardiniaPisa long controlled some territories on Sardinia while Genoa sought to expand its Western Mediterranean power; the two sides engaged in armed conflict and diplomatic maneuvering on the island, competing for ports and tax revenues.
2. 1164–1170Genoa · GenoaBoth Genoa and Pisa provided naval support to crusader states in exchange for trade privileges; the two sides crowded each other out on Levantine routes, with naval battles and embargo threats occurring from time to time, and the rivalry extending toward Palermo and North Africa.