Tribal Assembly
The only difference between the Plebeian Council after 471 BC and the ordinary Tribal Assembly (which also organized on the basis of the tribes) was that the tribes of the Plebeian Council included only plebeians, whereas the tribes of the Tribal Assembly included both plebeians and patricians. However, most Romans were plebeians. Therefore, the principal differences between the Plebeian Council and the Tribal Assembly were mostly legal rather than demographic. These legal differences derived from the fact that Roman law did not recognize an assembly consisting only of one group of people (plebeians in this case) from an assembly consisting of all of the People of Rome. Over time, however, these legal differences were mitigated with legislation. The Plebeian Council elected two plebeian officers, the tribunes and the aediles, and thus Roman law classified these two officers as the elected representatives of the plebeians. As such, they acted as the presiding officers of this assembly.