We had a long !@% thread about this a few months ago, just search it...
Anyways, the most plausible theory IMO...
-Pharoahs at the time were considered Gods on earth
-They needed a final resting spot when they died
-Egyptian people thought they were serving God (the Pharoahs) by picking out lime stones, transporting the stones, carving them, etc.
-Over time the Egyptians became well rehearsed in math and science so the technical specifications of the pyramids of Giza were on point
-Pyramids were built by Egyptians by using pulleys, levers, ramps, etc.
-The Aliens theory is ******ed and anyone who believes this theory is ******ed as well. It unfairly discredits what humans are capable of accomplishing whenthey are working towards a common goal.
-The Jewish slaves theory has been refuted time and time again by many reputable scholars world wide. The pyramids of Giza were built well before theintroduction of Judaism to the world.