Egypt was conquered by lots of different people, was under foreign rule — or under multiple local authorities, all claiming to be over all — for probably most of its history (just an uneducated guess, I’ve never worked that one out with an index card, pencil, and hash marks). There’s a reference in the Akkadian period of Assyria to tribute from “Musri” which was their name for Egypt (”Misr” is still in the official name for the country today; Akkadian and Arabic are both Semitic tongues; for that matter, the Hebrew name for it was Mizraim). Anyway, the Akkadian rule may not have been an occupation, it may merely have been a payoff, analogous to the Danegeld of medieval England.
http://www.freerepublic.com/tag/cambyses/index
An army swallowed up by a sandstorm. Wow. Seems some believe it and some don’t.
How the heck do you know all this stuff?
Do you teach it? Is it a hobby?