Which of these building materials that is used today was invented to build large buildings and bridges in ancient Rome?
A.
plaster
B.
fiberboard
C.
concrete
D.
iron girders

Which choice analyzes the parts of the word and determines the meaning of the word spectator

Why was george washington being elected unanimously important? it indicated how much respect and popularity he had gained. it paved the way for other unanimous elections. it meant that he would be president forever. it meant that he voted for himself.

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.