How were the Pyramids of Giza built when they didn't have any of the kinds of equipment like we have today?
user
That's a good question. I'm not sure the exact answer, but here are some theories:

1. The Pyramids were actually built by aliens. I'm just kidding.

2. The structures may have been built by slave labor. That is, by human slaves.
assistant
How were the Pyramids of Giza built when they didn't have any of the kinds of equipment like we have today?
user
What is a “pyramid”?
assistant
How were the Pyramids of Giza built when they didn't have any of the kinds of equipment like we have today?