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
Theodore of Corsica past, and he left Corsica in November 1736, ostensibly to seek foreign assistance. After sounding out the possibility of protection from Spain and Naples, he set off to Holland where he was arrested for debt in Amsterdam. On regaining his freedom, Theodore sent his nephew to Corsica with a supply of arms; he himself returned to Corsica in 1738, 1739, and 1743, but the combined Genoese and French forces continued to occupy the island. In 1749 he arrived in England to seek support, but eventually fell into debt and was confined in a debtors' prison in London until 1755. He