how do we know that the most agricultural production came from the fertile crescent?

Answer 1

Archaeologists have found remains of permanent buildings and other indications of agriculture.

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Answer 2

thank you!!!!!
and do you know of the book guns, germs, and steel? we were supposed to read chapter 10 of that book, so i was wondering if it related to it, perhaps?

Answer 3

You're welcome.

I'm not familiar with this book, but perhaps this summary will help you.

http://mcgoodwin.net/pages/gungermsteel.html