Re: recruitment of units
For the first part to make unit only recruitable in sparta add
and hidden_resource sparta
to the end of the recuitment line for the unit, to make it not recruitable in sparta (i.e. everywhere else)
and not hidden_resource sparta
For the second part, unfortunately all unit recruitment must be tied to a building. If you want a unit recruitable more or less anywhere you're best beet is to add it to the core_building tree (i.e. the governors buildings).
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