Capital city

The capital of a nation is usually defined as the city within that nation that the functions of government are centralised. For nations with tiers of government, where some measure of authority is delegated to units smaller than the national level, these units may themselves have capitals. The word may also be used in a less restrictive sense, to denote a city or other locale which a center of some industry or activity; an economic capital, a fishing capital, etc.

In micronations, especially those that are mostly online and that have no secessionist ambitions, the idea of having a capital is less related to an actual need for centralisation in a single place than to the idea that nations naturally have capitals. As such, many online micronations, especially if they're not averse to creating a little fictional background, will claim to have a capital.