How did ancient people build massive structures such as the pyramids in Egypt and Stonehenge?

I dont know exactly what you are looking for, but I do know Egyptians used slave labor and a ramp system used to haul alabaster stones out of a quarry.

Explanation:

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.