there was 5 significant cities before the flood.    ppak this was one that's been found. they story goes that they were ruled by a lineage of kings that mixed with gods. this is why a flood was sent. the half human half god people were functioned as god kings. the serpent god that mated with the humans warns his lineage. out of his society they are the sole survivors which is noah and his family. the flood wipes out advanced civilization as they know it but it wasn't something that killed everyone on the planet.  the serpent god instructs them to redistribute knowledge around the earth. this is why there's much advanced architecture mixed with serpent worship across the world.  ancient sumeria goes back to 5-6k bc. the epic of gilgamesh is written to their culture and there's a part of that book where gilgamesh travels to the ancient city of myth that existed pre flood called shuruppak where he converses with noah. this confirms that shuruppak is really really really old.
United States