C) Rich farmland in the river valley
The Tigris and Euphrates rivers originate in Turkey, but supply many nations with water.
This is a true statement. These two rivers run through many other countries.
I hope this helps!
~kaikers
What is number 15 could you be mores specific?
I don't know if there were any options, but something that is at heart of a democracy is popular sovereignty: the belief that the power is in the hands of the people.
In a representative democracy those people are represented by some people chosen, to make the democracy easier to work.
alternatively you could say a body of laws: legislature or a constitution.