 In exchange for the Venetian alliance against Achaea, the triarchs renewed their previous agreements, ceded possession of the fortress of Negroponte, which controlled the bridge over the Euripus Strait, and of extensive lands on the island.The triarchs and their domains were freed from any duties and the considerable tribute that they paid to Venice until then, but in turn, they gave up the rights to all customs revenue to the Republic.Venice also received further concessions, such as the right to regulate the weights, measures and scales for all Euboea, and privileges for its citizens.