This involves a fu damental misunderstanding about what science is. But that's not unusual, in fact a lot of scientists share it. Because they think philosophy can just stay in it's box, and don't recognise the underpinnings of their endeavors. You mistake technology, including ideas, for science.
Ancient cultures developed electroplating
Does this mean they had electricity? Obviously, no.
Compare these to what https://en.m.wikipedia.org/wiki/James_Clerk_Maxwell did in his lifetime. He took a hodgepodge of electrical a d magnetic phenomena, and through a series of systematic experiments and mathematics, unified electricity and magnetism into four short equations. This is the essence of what science is about, sytematic, unifying, experimental. Not technology, which is purely incidental.
It is interesting to note widespread phenomena of https://en.m.wikipedia.org/wiki/Multiple_discovery And we might add to such, development of written language https://en.m.wikipedia.org/wiki/Writing_system#History
Developments of ideas, and technologies however does not necessarily mean full development of their consequences https://en.m.wikipedia.org/wiki/Joseph_Needham#Needham_Question
There has been a widespread tendency in the West to overlook or underestimate cultures and societies elsewhere. No doubt that needs a corrective. But science is about finding fundamental principles that minimise assumptions and maximise explanatory power. It is about integrating and unifying methods and ideas. Not only did that not develop elsewhere, it took a lot longer to fully develop here than most people realise. Newton was an astrological alchemist, as well as a scientist.
Notation and symbolic abstraction is exactly the point.