How did Corsica switch from being Italian to being French?

Answer 1

Answer 1
It was obtained by France during the Napoleonic wars.

Answer 2
Corsica was conquered three by the French, however, the event that Answer 1 refers to was the third conquest of Corsica, wherein France took Corsica from the British in 1814.

The Corsicans left the Genoese Republic (later to become part of Italy) in 1764 when the French bought the territory. The French defeated all Corsican resistance in the later 1760s and Corsica was incorporated into France in 1770.

There was an Anglo-Corsican liberation/occupation of the island from 1794-1796 and again in 1814. The French militarily ejected both the British and the Corsican Nationalists.

Answer 2

It is my understanding that Corsica was sold to the French in August 1769, by the Italian state of Genoa. The same year as the birth of Napoleon.