I would go with Ice Core samples since early societies wouldn't have written records or maps, and tree rings would only tell if they were fossilized, I hope this helps :)
It is the United states office of war information.
<span>The main reason why Cleisthenes is generally considered the founder of Athenian democracy is because he was the one who openly advocated for All voices to be heard, although this was only men of certain social stature
Hope I Helped!!!</span>
D, Low demand for exports
The president of the U.S. Senate is the VP, he is leader of all congress and is deciding vote