Giza was not the only location where pyramids were built there are many sites scattered throughout the western desert and it was not the place where pyramid-building started.
The pyramids only happened to be built in Giza.
mnli hypothesis: The pyramids only happened to be built in Giza. premise: Giza was not the only location where pyramids were built there are many sites scattered throughout the western desert and it was not the place where pyramid-building started.