Topic summary
Collegia

Extracted from the Wikipedia article Collegium (ancient Rome).
Civil collegia
Collegia could function as guilds, social clubs, or burial societies; in practice, in ancient Rome, they sometimes became organized bodies of local businessmen and even criminals, who ran the mercantile/criminal activities in a given urban region (similar to a rione). Legal collegia possessed certain rights, such as common property, a common treasury, and legal right to an attorney. Large portions of the population of a town could be a part of collegia associations, with many aspects of daily life having corresponding collegia. The organization of a collegium was often modeled on that of civic governing bodies, the Senate of Rome being the epitome. The meeting hall was often known as the curia, the same term as that applied to that of the Roman Senate.