Which members of roman society were a minority, but held most of the power in the early roman republic?

Which areas where seperated by the iron curtain

In ohio in 1872, the cleveland massacre was a violent labor dispute at standard oil refineries in cleveland. a takeover by standard oil of the refineries in cleveland. an attempt to stop standard oil from becoming a monopoly. a failed attempt by standard oil to take over other refineries.

Why might the greeck city states have an advantage over the persians