A city-state is a city that has its own sovereignty. There were many important city-states in ancient Greece. Nowadays, cities may have differing degrees of self-governance. In order to be considered a city-state, a city must govern itself independently, by regulating its own taxes, or having independent representation at the United Nations.
Historical city states
Modern city states
Sorted in order of area size.
Singapore was a British colony till 1959. In 1959, it achieved autonomy in internal matters. Between 1963 and 1965, it was part of Malaysia. Singapore was removed from Malaysia on 9 August 1965 and became independent.
Monaco-Ville and Monte Carlo is beneath France and is 501 Acres large.