Corsica and killings culminated in the assassination of Prefect Claude Érignac in 1998. In 2013, Corsica hosted the first three stages of the 100th Tour de France, which passed through the island for the first time in the event's 110-year history. Corsica was formed about 250 million years ago with the uplift of a granite backbone on the western side. About 50 million years ago sedimentary rock was pressed against this granite, forming the schists of the eastern side. It is the most mountainous island in the Mediterranean, a "mountain in the sea". It is also the fourth largest island in
Medieval Corsica descendant of the Malaspinas who had once ruled in Corsica. His brother Gherardo, Count of Montagnano, accepted the call, proclaimed himself Count of Corsica, and, landing in the island, captured Biguglia and San Fiorenzo; whereupon Tommasino da Campo Fregoso discreetly sold his rights to the Bank of San Giorgio. The Bank, allied with the Gian Paolo da Leca, defeated Gherardo only to find the Fregoso attempting to repudiate their bargain. Gian Paolo supported the Fregoso, but the Bank, after hard fighting, exiled him to Sardinia. Twice he returned, and he was not finally expelled from the country till 1500. It