Which ancient principles can be found in american government today?

When conducting research for forming a hypothesis, which practice should historians follow?

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.

Which of these had the biggest impact in the changing the georgia state flag