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vatican city
Vatican City is completely surrounded by Rome, the capital of Italy.
Technically, there is no 'state within another state'. The Australian Capital Territory does however lie within New South Wales.
Lhasa is the capital of Tibet, which is not a country, but an autonomous region within China.
domestic trade is the one which takes place within a country.It is free to move around factors of production like land, labor, capital and labor capital and entrepreneurship from one state to another within the same country
Capital cities are the seat of government within a country, state, territory, province, etc.
enclave
They are usually denoted by a star within a circle.
Reykjavik is the capital and largest city of Iceland, and the northernmost capital city of any distinct country.(Nuuk is the capital of Greenland, which is a 'country' within the Kingdom of Denmark. It is only slightly farther north than Reykjavik.)
Zimbabwe in South Africa.
The star within a circle designates a capital city, in the case of Washington DC, a country's capital. distric of Columbia
ummm.... not sure, sorry but the country within it is called a landlocked country