The answer is D
A good way to remember this is to think about America before or pre-columbus, who came to the americas in 1492.
I believe that historians have found artifacts that the Indus Valley Civilization made in the area the Sumerians were. There also might have been written evidence.
The answer to your question is b
you are welcome
Answer:
yeah
sometimes. it may leads to war .
but it is very bad thing
