How do you explain similar glacial scratches on rocks in australia and antarctica

Where is the only location in the united states where you drive on the left side of the road?

One of the main reasons societies settled along rivers in the neolithic era was because a) the village elders demanded it. b) the land there was more valuable. c) it was more safe and secure there. d) it provided irrigation for farming.

What is one early technological advance that shaped culture? a the use of fire b the discovery of arable land c family units. d migration