Jersey belongs to the Channel Islands, bit confusing as you would expect them to be UK of French jurisdiction, however this is why they do not have VAT.
All those islands belong to the country of Canada.
France is the closest country to the island of Jersey. It lies in the English Channel, just off the coast of France.
UK
Europe
CANADA
Italy
The mediterranean island of Corsica belong the country of France
Sumatra is an island located on the Sundra Islands. The island belongs to the country of Indonesia and is the 6th largest island in the world.
Madeira Island is part of Portugal.
The island Java, belongs to Indonesia
The Island of Jersey, which is on the English Canal between Britain and France. The Isle of Jersey isn't necessarily a country, as it's considered on of the British Islands that surround the bigger island of Great Britain and Scotland.
Sicily is a region of Italy but they have a self governing community. Although its under Italy, it isn't a separate country.