When Emperor Frederick I Barbarossa came to Italy to oppose the power of the Italian cities, Genoa gave its support to the imperial cause, although with slight reservations, while Pisa made its support conditional on the emperor taking part in the siege of Milan.
When Emperor Frederick I Barbarossa came to Italy to oppose the power of the Italian cities, Genoa gave their support to the imperial cause, although with some reservations. Pisa, instead, gave their unconditional support to the emperor taking part in the siege of Milan.