Condominium (One World)

A condominium is a land over which 2 or more countries exercise authority. The exact way in which the authority is exercised and the reason why this state of affair came about varies but the following are the most common:

(for the sake of simplicity, "MC" here refer to mother coutries, i.e., those nations that exercise some form of authority.)

Top Most Condominium
The country is autonomous all internal aspect but the head of state (and probably head of ministries and government agency) needs to be accepted by both MC. Alternatively, some from of elected parliement submit a list of candidate to both MC who chose one from among it.

Inhabitants have originaly only the citizenship of the condominium but are probably able to gain one of the MC's one more easily and/or can get a special type of visa to work and study in the MC.

This is probably best for buffer states. It doesn't cost anything to maintain (due to their autonomy) and the mandatory confirmation of head of state ensure that it wont be one that favour one NC over the other.

Confederated Enclave
The condominium is divided into 2 or more enclaves. Each one is considered a part of one MC and its inhabitant have its citizenship. There is a central government with very limited powers (mostly things like ensuring the maintenance of roads, postal services, etc...). If there is a great number of enclaves psread all over the place, giving the land condominium status could have been the best way to avoid starting (or more probably, restarting) a war over borders. The confederation is probably not considered a distinct country by other governments and organisations (no olympic delegation or embassy for example).

Partial Condominium
Part of the country is controled by 2 or more MCs. the parts in question might be contiguous with an MC or might be inhabited by an ethnic group related to it. The central government is sovereign except is certain matters within those zones. These matters could be cultural (the curriculum on a zone being dictated by a given MC) or physical (no engineering work is allow in the zone without the MC permission).

This type of condominium (which is pretty much what jervaine would be *there*) could be a more forcefull type of "top most condominium" described above. Alternatively, it could be an occupied country on its way toward recovering autonomy: the government is sovereign over the country except for matters regarding the demilitarized zones near the MCs borders.

True Condominium
There is no central government but rather, decision are taken by concensus between the local representatives of the MCs. Various regions could be administered by unelected representative that answer to one MC (depending on the situation, military governor, company officials, etc...) or they may alternate governance between them.

If there is (or was) a native population, its right and obligations might vary from one region to another where they may or may not have some form of representative. MCs citizens might be "above the law" in regard to the native population but would still have to answer to his own government (there might be an agreement that citizens must be tried by there own MCs no matter where a crime was commited).

This is the most unstable of condominium and few, if any, modern ones still exist.