Write a debate on conservation of nature is important than technological advancement? answer it fast plz

What refers to the division of power among the three branches of government

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.

What river systems the worlds earliest known civilization develop ?