Well, it was something that the Tigris and Euphrates River dumped to, and was also called that because it was shaped like a crescent. it was I think egyptians used.
Ethnocentric.
Is the correct answer
Answer 2 is the right answer if this is in 4/4
the square root of 193/225 is .9261629326....
but the root of 225/193 is 1.079723626