What year were pyramids first built?

Pyramids were created in a series of stages. First were square, house like tombs that the bodies were buried beneith. Then a pharoah named Djoser decided he wanted something bigger and better. He told his architect, Imhotep, to build him something better. Imhotep created a step pyramid, which consisted of seven steps. After Djoser were a few more step pyramids. Then a pharoah decided he wanted what we call now as a true pyramid. Unfortunately angle of the pyramid was too steep and the structure became unstable halfway, so the angle was shallowed and it became a bent pyramid. After that, the first true pyramid was built, the Great Pyramid of Giza for a pharoah named Khufu (Cheops in Greek).