This article on the end of the ancient Egyptian civilization posits four different points at which the civilization ended:
Is it the definitive end of native Egyptian rule (at least until the 20th century)? In this case the answer would be the flight of King Nectanebo II in 342 BC. Is it Egypt's absorption into the Roman Empire in 30 BC? Or the last appearance of the ancient hieroglyphic script just before AD 400? Or the closure of the last pagan temples in the sixth century?
The article seems to argue that the final option, the closing of the last pagan temples is the most appropriate for the end of the civilization. I can find a lot of articles advocating that the end was when the civilization was absorbed into the Roman Empire, but I am wondering is this the majority view amongst academics, and does it make the most sense as the end of the civilization?
I realize this is somewhat opinion based (what history isn't?), but there should be someone who can articulate why one point is the accepted majority, if it exists at all.