Short answers, pulled from the story.
Pasquale Paoli established a short-lived independent state governed from the mountain town of Corte in 1755. This experiment drew inspiration from Enlightenment thinkers like Voltaire and Rousseau who were then shaping political thought across Europe.
On the 21st of August 1975, twenty members of Corsican Regionalist Action occupied the Depeille wine cellar near Aléria equipped with rifles and machine guns. Interior Minister Michel Poniatowski sent 2,000 CRS and gendarmes backed with light armored vehicles to attack the occupation at 4pm on the 22nd.
Petru Rocca founded Partitu Corsu d'Azione in 1923 initially promoting union with Italy before shifting toward autonomy after World War Two. By 1953, Rocca demanded acceptance of the Corsican people and language along with creation of a university in Corte.
World War I generated an audience for previously marginal ideas when conscription affected agrarian communities more severely than industrial ones. Corsica became the department with the highest ratio of casualties per capita during that conflict due to these demographic factors.
Pè a Corsica won 35.34% of votes and 24 out of 51 seats in Corsican Assembly during 2015 regional elections. Their majority strengthened further in 2017 when they secured 56.46% of votes and 41 seats.