What impact did Mao Zedong have on China?

Why is it useful for historians to base certain studies on the analysis of historical periods

How do you think entrepreneurs contribute or industry in america? describe your answer.

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.