Soren wrote on Feb 1
st, 2015 at 8:13pm:
I think PD means the steady expansion of Roman citizenship.
No, he means "actually having a say in how the place was run." All he can say about it was that "The Roman Empire expanded this far beyond what was typical for the time" and that "there was a large number of people involved, including representatives of the plebs." But nothing at all on what this "say" actually was.
I suspect the reason FD won't give any explanation of how citizens of Rome 'had a say in how the place was run' is that he has no idea.
But in the interests of robust discussion, I'll kick it off:
The Roman Republic had a people's assembly that allowed the common people representation. However this assembly was a toothless tiger and was not able to provide any meaningful representation for the common people. Real power was firmly and almost exclusively in the hands of the fabulously wealthy, and government was run by them, for them.
As Rome's power and prosperity increased, the concentration of power narrowed further and further, until not even the landed aristocracy had much of a say, and eventually all power was in the hands of the emperor.
Thucydides provides a pretty comprehensive debunking of the "political incusiveness = great prosperity and stability" argument in his critique of the Athenian empire.