<span>It was actually Standard Oil that was significant in the formation of the Cleveland Massacre in the late 1870s. John D. Rockefeller's company called Standard Oil held a monopoly on the oil traffic in and out of Cleveland until the Supreme Court ruled it had to be split up in 1911.</span>
Alexander Graham Bell.
Bell was the inventor of the telephone. This message was to his assistant, Thomas Augustus Watson; who was in the other room at the time of this breakthrough and was able to hear his voice through the machine.
A cycle of expansion and contraction phases that a nation's economy experiences over time is D. a business cycle.
Answer:
They created the Trade-union movement to better their collective action
Explanation:
unsafe places where workers were not lit & put in long hours for low pay.
