Levers, rollers, ramps and lots of labor. I have to admit, all the furor over "HOW could the pyramids have been built?" seems pretty silly to me. When you keep in mind how long it takes and has taken people to build cathedrals - hundreds of years - it really makes the construction of a pile of large cut stones a lot less mysterious. It's not like the pyramids were built quickly; there's no reason to think that. Given enough time and labor, virtually any construction becomes possible.
Either the stones were cut and then moved into place, or they were rolled into place and then cut. In either case, they had to have used levers and ramps to get the stones into place.
Either the stones were cut and then moved into place, or they were rolled into place and then cut. In either case, they had to have used levers and ramps to get the stones into place.