History of Modern Italy in a Nutshell
In the first half of the 1800s, Northern Italy was very poor, especially in the northeast and mountain regions. This poverty caused mass emigration, mostly to South America, France, and Switzerland. The Kingdom of the Two Sicilies/Naples was still by far the richest country on the peninsula and one of the richest in the world, even though the French occupation at the beginning of the century and the 1848 revolts had weakened it. There were virtually no emigrants from the South.
The British Empire had occupied and annexed Malta from the Kingdom of the Two Sicilies during the Napoleonic Wars and continued to keep it, but it wasn't enough: they wanted to control the whole island of Sicily. The Kingdom of the Two Sicilies had the largest military and commercial navy in the entire Mediterranean, and it was seen as a potential threat to British control of the sea lanes that went to India through the Mediterranean. The kings of the Kingdom of the Two Sicilies pursued policies of strict neutrality, no alliances, and no external interference in other countries' affairs. They saw their country as an "island": "My country is surrounded by sea water on three sides and by holy water on the other" (meaning the Papal States, of which the Kingdom of the Two Sicilies was by far the strictest ally, being the most Catholic country in the world).
The Kingdom of the Two Sicilies always resisted repeated British advances to become a sort of Portugal-style protectorate, and this sealed its fate.
The British Empire had occupied and annexed Malta from the Kingdom of the Two Sicilies during the Napoleonic Wars and continued to keep it, but it wasn't enough: they wanted to control the whole island of Sicily. The Kingdom of the Two Sicilies had the largest military and commercial navy in the entire Mediterranean, and it was seen as a potential threat to British control of the sea lanes that went to India through the Mediterranean. The kings of the Kingdom of the Two Sicilies pursued policies of strict neutrality, no alliances, and no external interference in other countries' affairs. They saw their country as an "island": "My country is surrounded by sea water on three sides and by holy water on the other" (meaning the Papal States, of which the Kingdom of the Two Sicilies was by far the strictest ally, being the most Catholic country in the world).
The Kingdom of the Two Sicilies always resisted repeated British advances to become a sort of Portugal-style protectorate, and this sealed its fate.