Pyramids

This is the Egyptian Pyramid.

This is the wonder of the world, one of the unsolved mysteries.

How could the the Egyptians build such an enormous building? This huge building needs advanced technology to complete, but during the Iron Age, people didn't have such technology. So, how did Egyptians build the pyramids? Although many scienctis had inferred how the pyramids were built, not everyone has agreed.

Among the inferences, two are acceptable:
1) The aid of aliens;
2) The physical method--the Egyptian may have such knowledge...
and mine--time-travel again.

The aliens maybe suitable, but this is barely a match with the existence of aliens. We don't know much about the existence of them, maybe there are aliens, or maybe not. So, this inference has 50:50 chance to be right.

The knowledge of the Egyptians were limited, so the second theory may be wrong; but the third one may be acceptable...I had explained the method to travel trough time...so, what do you think?

Do the Egyptians and the Mayans share the same origin? But their gods are not the same, with the exception of Ra being the same as the sun god of the Mayan, and if these two civilisations shared the snake god, why can't they be from the same origin?

This is the Pyramid of the Mayan Empire.

This largest pyramid of the Mayans reached 34 meters high, of course, this is lower than Khufu's. There were boulders surrounding some of these pyramids (most are now ruins). The Mayan Empire was called also the 'Empire of the Sun', since the Mayans prayed to the sun as their main god. Besides this, they also prayed to snakes.

Unfortunately, the Mayans were defeated by the Spanish in 1521. And this is what I hated the most, the Spanish destroyed all of the historical remains of the Mayans!!! This is the most foolish act in history! The books left were failed to be translated, all because of the Spanish!