And, probably from the same Reddit thread, there were a pocket of woolly mammoths still doing woolly mammoth things when the pyramids were put up. In the same spirit the Sahara hadn't fully stopped being habitable (as it was during the late ice age) yet, and that had an impact on Egyptian history.

The Near East really did get rolling pretty quickly once the warm period began, which is funny because there were areas that were arable all along. In a fair world we'd all be speaking an Australian language or something.