Invasion of Corsica (1794) the Ligurian Sea, a region of the Mediterranean bordered by Western Spain, Southern France and Northwestern Italy. Control of the island, and in particular the harbour at San Fiorenzo, can allow a naval force to exercise regional dominance over this important waterway. Corsica was for centuries a part of the Republic of Genoa, although by the mid-eighteenth century it was "de facto" independent as the Corsican Republic, led by Pasquale Paoli. Unable to contest Paoli's control of the island, the Genoese sold Corsica to the Kingdom of France in 1768, and a French invasion swiftly captured and annexed the island.
Corsica French from the island and established an Anglo-Corsican Kingdom. Following Spain's entry into the war, the British decided to withdraw from Corsica in 1796. Corsica returned to French rule. Despite being the birthplace of the Emperor, who had supported Paoli in his youth, the island was neglected by Napoleon's government. In 1814, near the end of the Napoleonic Wars, Corsica was briefly occupied again by British troops. The Treaty of Bastia gave the British crown sovereignty over the island, but it was later repudiated by Lord Castlereagh who insisted that the island should be returned to a restored French monarchy.