Anthropologists divide prehistory into two periods, what are they called?

Which of these effects of mass production techniques used during 1920

How did the construction of the erie canal improve transportation in the united states in the 1820s? a. the canal connected the great lakes to the mississippi river. b. the canal connected the great lakes to the ohio river. c. the canal connected the atlantic and pacific oceans. d. the canal connected the great lakes to the atlantic ocean.

Which of the following statements best describes the importance of the battle of guadalcanal