That's just a few examples... they were also constructed in Mesopotamia, Spain, Cambodia, Algeria, Nigeria, Greece and China.
Is it simply an easy shape to build? Strange that all of them seem to be built for religious/ceremonial purposes.
Do religious beliefs all around the world have a common ancestor involving pyramidal shapes (unlikely)?
Did all past civilisations have the sky as a focus in their faiths, resulting in buildings which literally point at the heavens? I guess even our modern day churches are pointing skyward.
Anyone know a definite answer? Not looking forward to the inevitable Gungasnake "aliens did it" shenanigans here.