Which river was located near Sumerian city-states?
~ Tigris River~
~ Euphrates River~

Explanation:

Both are near

~ Euphrates River~

Explanation:

the question is asking about the things that may have affected and what they effects had on the spanish conquest and settlement of america

explanation:

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b