The early humans’ way of life made it impossible for them to live in which kind of shelter?
a.
rock shelters in cliffs
b.
tents
c.
permanent homes
d.
caves

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.