Plato was probably talking about a Democratic government which is composed of several leaders that are in-charge of particular cities and communities in a country. During his time, Plato is a known philosopher who spent his time discussing with people in plazas and squares arguing about almost anything under the sun.
Explanation:
. provided checks and balances on different branches of the government
No, not really. They didn't didn't have a such of a thing of "Anti-American" at that time