Corsica the wars for the conquest of the colonial empire, the introduction of steamboats, which reduced the travel time between mainland France from the island drastically, and — last but not least — Napoleon himself, whose existence alone constituted an indissoluble link between France and Corsica. Thanks to all these factors by around 1870 Corsica had landed in the French cultural world. From the 19th century into the mid-20th century, Corsicans also grew closer to the French nation through participation in the French Empire. Compared to much of Metropolitan France, Corsica was poor and many Corsicans emigrated. While Corsicans emigrated globally,
Roman Catholic Diocese of Mariana in Corsica greatly compromised. In 1453 Pope Nicholas V entered into a verbal agreement with the Republic of Genoa, which specified that, although the Pope maintained the exclusive right to appoint bishops on the Island of Corsica, he would appoint only Genoese subjects who were acceptable to the Government. The Genoese government turned the island over to the administration of the Genoese Banco di S. Giorgio, under new statutes for Corsica were issued, the "Capitula Corsorum", which specified that bishops on the island had to be natives of the island. In 1464, however, the Republic of Genoa came under the domination of