I read a book last year, "The Puzzle of Ancient Man" by Donald Chittick. Here's his basic summary of explaining all kinds of discrepancies in
archaelogy with the Bible.
He starts off with a sort of reverse understanding of human developement. We usually see humans as starting off dumb and using simple tools -- "ug
ug" says the caveman, that motif. The author posits that mankind was extraordinary back in the day. Lifespans reached into the 900's. In Genesis,
it states that man before the flood could basically think it up and it was possible. Their limit was their imagination.
But gradually as time wore on, especially after the flood, mankind got kinda, well, dumber. Perhaps knowledge on some topics increased, but overall
our POTENTIAL decreased.
So this is why we see so many glorious and amazing architecture pre-flood. Then after the flood, God commands mankind to spread out and repopulate
the earth. Many do and they start many different cultures around the world. Then Nimrod defies those orders and builds Babel. We usually think of
Babel as being a great tower but the author explains that the hebrew word used can just as easily mean something to gaze at the stars ("reach the
heavens" has new meaning). That culture, we have discovered, had strong astrologic and astronomic interests. It comes as no suprise that when God
dispersed everyone from Babel that all the new civiliazations that sprouted up all over the world, from the Chinese to the Incas and Maya, all had a
strong interest in astronomy and astrology. Also its why we see pyramids in those places.
I don't recall specifically whom he said built the pyramids, but I think he theorized that perhaps Adam and early mankind built it (perhaps the size
of the covenant was divined to the architects of the time?).
What we do discover is that the Giza pyramids were the first ones built. Usually you'd expect the grandest to be the final ones built and the crude
ones first. You'd expect a shack to be built by a civilization before a skyscraper. But that's not what we see in Egypt. It seems that the
smaller ones are the ones that have more definitive culturally egyptian purpose, use and design. Seems they maybe copied the pre-flood folks without
the capacity to mirror their grandure and genius.
There's a LOT more to what he says and I STRONGLY recommend reading the book -- it's a quick but intelligent read.
Hope this all helped.