Scopes and importance of chemistry anyone wanna be my friend

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

Which of the following contributed to the grown and success of the roman empire

Based on the information given and the gauges which process or processes have their alarm light on?