Defence is the responsibility of the United Kingdom.
Insurance and online gambling generate 17% of GNP each, followed by information and communications technology and banking with 9% each.
although it is uncertain whether they conquered the island.
Around the 5th century AD, large-scale migration from Ireland precipitated a process of Gaelicisation evidenced by Ogham inscriptions, giving rise to the Manx language, which is a Goidelic language closely related to Irish and Scottish Gaelic. They established Tynwald and introduced many land divisions that still exist.
The head of state is Queen Elizabeth II, who holds the title of Lord of Mann and is represented by a lieutenant governor.
In 627, Edwin of Northumbria conquered the Isle of Man along with most of Mercia.
In the 9th century, Norsemen established the Kingdom of the Isles.
Chicken Rock on which stands an unmanned lighthouse, St Patrick's Isle and St Michael's Isle.
The last two of these are connected to the main island by permanent roads/causeways.