[@Scrapula] Haven is the democratic capital of the 4, as mentioned. It is not as broad an expansive as the other two empires. Magi have their home bustling with nature, magic, more of a utopia setting. Glass buildings, magical protection, more free-lance. Think Utopia. Now Mach have their home as very industrial, machines run everything, robots bustling about, fast bullet trains speeding people here and there. A futuristic metropolitan relevant to New York City.

Now Haven can be seen to have their more "City" like area surrounding the capital hall. Like an Urban area. Outside of that are suburbs, and outside of that is rural. Haven being the capital has all these things and the Urban part is the most substantial and has the largest population. Outside of this there are smaller areas under Haven control that have more suburban and rural areas, with a few exceptions pertaining to small cities. There are 2. 

Does that answer your question?

[@Conibear] I am truly glad you asked! I was actually going to explain this more in the OOC, but you have forced my hand (how dare you). Now I'm familiar with these terms as I'm currently taking a college course on government and politics. The ones surrounding the US to be exact. Although you're more interested in government.

It is indeed a Republic, but a Republic is a kind of Democracy, you see. A constitution has been written, and there is federalism to an extent as each subdivision of nations has it's own smaller government and so do the two smaller cities. There has been no need for an executive branch of government and that power has been bestowed upon the legislative branch, which is bicameral. There are two senators from each subdivision and a number of representatives based on population. Haven is directly controlled by the national government and the smaller subdivisions take care of personal matters to most of the extent besides money, defense, foreign affairs, etc. But the national has power over all subdivisions and can overrule them. Like a judicial review. Speaking of which there are court systems but they are under rule of the legislative. 

I hope that answered what you wanted to know, if you need anything else, please feel free to ask!