So this should be a pretty obvious idea, Two or more nations joining together to form bigger stronger nations.
Real world examples
Soviet Union, Austro Hungarian Empire, European Union(should it ever happen), I guess you could even say the US sort of.
Anyways how this would happen is over time if you had a close enough alliance you would eventually merge together. Now for the AI thats simple. But how it would happen for Human-AI You would be given an option to merge only if your civ were the stronger and if the AI people were so to speak in love with your cultrue.
Also with this idea there is of course breaking apart of civs. If you have an uberly large civ you people would of course be able to revolt but in addition to this treaties after wars could break apart loseing side civs.
Example
Civ A goes to war with Civ B, Civ A wins, Civ B if beaten badly enough could be forced to split up into multiple nations. of course this would not be possible if the Civ were to small.
Real world examples
Soviet Union, Austro Hungarian Empire, European Union(should it ever happen), I guess you could even say the US sort of.
Anyways how this would happen is over time if you had a close enough alliance you would eventually merge together. Now for the AI thats simple. But how it would happen for Human-AI You would be given an option to merge only if your civ were the stronger and if the AI people were so to speak in love with your cultrue.
Also with this idea there is of course breaking apart of civs. If you have an uberly large civ you people would of course be able to revolt but in addition to this treaties after wars could break apart loseing side civs.
Example
Civ A goes to war with Civ B, Civ A wins, Civ B if beaten badly enough could be forced to split up into multiple nations. of course this would not be possible if the Civ were to small.