How Did Ancient Civilizations Build Massive Structures Without Modern Tools?

Imagine you're playing with blocks, and you want to stack them really high. You don't have any machines, just your friends and some clever tricks.

Ancient people used big stones, like building blocks. They probably rolled the stones on logs or slippery surfaces to move them around. Then they used a lot of help from other people to lift and place the stones in perfect lines, just like you stack blocks with your friends.