while this tries to present a nice tidy picture and dump all progress and technological development to somewhere near the holy land of certain peoples even a wikipedia lookup would reveal serious flaws
indus script dates back to nearly the same as sumerian and egyptian around 3200 bc with some potsherd markings dated further back to 3500 bc
if indus script was related to sumerian it wouldnt be undeciphered till now
the first evidence of brahmi is from lanka which is probably as far from levant as china
it is funny that the intrusive nature of the alphabet amidst the syllabaries is not remarked upon but just accepted especially since the other intrusive party of the time 1500 bc are indo europeans and most likely indo aryans in the mitanni and kassite eras
the near complete further non development of the alphabet to better fit the languages indicating the borrowed nature of it
as opposed to say brahmi or chinese
no mention of the tale that the phoenicians gave greeks the alphabet or dicussion of their origin which is still unknown herodotus or someone said they were of the african coast i believe ie not native but everyone pretends this is just fake
the strained efforts to relate everything back to egyptian heiroglyphs because europeans want that heritage too