If you really want to know, watch this:
https://youtu.be/551S5Kkq8yQ?t=3159>Settings >Captions > Auto-Translate > EnglishUsing the New Chronology is really the best method for explaining (supposed) historical anamolies such as these.
It's depressing, but in a way, very liberating.
As to who ordered it's construction: Napoléon?
https://stolenhistory.net/threads/did-napoleon-build-the-great-egyptian-pyramids.63/