I come to you with a new location proposal! Yes the Tigris and Euphrates Rivers are a great and convinent location, but I have stumbled upon something that would better suit your needs. Not only is this land fertile for you to grow your crops and trade with neighboring nations, there is a wide span of wildlife that would allow for you to hunt as well. This land is called the Indus and Ganges River Valley. Not only is the land very vast, it is conveniently located just south east of your location! Come out and visit! The many Civilizations already formed are waiting for you.