Great Depression Own Sentence

Which of the following american companies had a monopoly in the late 1800s?

3. according to oliver, how can the fast food industry with the food revolution? i will give brainliest

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.