 Between the 12th and 13th century various families led the administration of Campo, until the year 1329, when it becomes a small fief within the Holy Roman Empire, surrounded by the territory of the Republic of Genoa.In July 1600 the Republic of Genoa increased control of the small enclave, banishing any local opposition to its rule.In the 18th century the town saw a gradual buildup of manufacturing activities (iron production and processing, silk spinning mills, paper mills, lime pits, forestry and agriculture), as well as the birth of the republican municipality, which joined the Ligurian Republic in 1797.