Asalam ul laykum i am not sure either if it is the same persn. But anyways, what the point that brother osama is making is that, those extra details are irrelevant. The point is that allah swt talked about this nation in the quran, and told ua that he deatroyed them but kept there reminants as a sign for us. That at itself is proof enough. Nitpicking at every small detail is called useless information that prophet muhammad pbuh warned us about. But asking such questions proves nothing allbit does is waste time and even if u learn something u can never make use of it because the relevant information was already proven, so basically all that was done through asking nitpick questions was nothing. Honestly, knowing what civilization they could have been or trying to connect it to what western history says, is useless because even they admit to making up stuff. So brother or sister or whoever u might be, plz these extra details are a waste of everyone's time. It is like asking if there is a water and plants on a planet that is too near the sun, even if there was some how u can never live on it because the sun would kill u. So plz don't waste time with these nonsense.