You’d think tax records might show politic peripheries outside of central rule. Anything you know of in the record?
AFAIK, there are zero tax records from ancient Egypt, any kind of levy was in-kind, x number of bushels of grain, x number of chickens, that kind of thing. And no such records survive. The local governor paid the pharaoh and the temples, and collected from his lower officials, etc down the line until the tax collecting toughs actually went out and collected.