The unique characteristics of a city state distinguish it from other types of government as its sovereignty or independence. This means that a city-state has the full power and power to manage itself and its citizens, without any interference from outside governments. For example, the Monaco city-state government, although wholly located in France, is not subject to French law or policy. By owning sovereignty, city-states are different from other forms of government agencies (such as “autonomous regions” or regions). Although the autonomous regions are functional political branches of the central government, they retain different degrees of autonomy or autonomy with the central government. The Republic of China and Hong Kong and Macao in Northern Ireland are examples of autonomous regions. Unlike ancient city-states such as Rome and Athens, they are strong enough to conquer and annex large areas of land around them, and modern city-states are still small on land.