Interesting even though we currently know there were centuries of people in existence before the Hebrews. A large portion of their "history" is derived from the writings and oral stories of those who came before them.
The hebrews as a people were part of the canaanites. It would be similar to living in the u.s. where there are seperate states and the people have different beliefs yet they are all part of the same general area.
To say other people came before them isnt really accurate, the hebrews would have existed along with other people who later formed civilizations in the area like sumer and egypt. I believe they would have witnessed the same type of events at the same timeframe.
The sumerians had a written language first so its not surprising these events would have been recorded by them previous to hebrews or canaanites recording them, but that doesnt mean it wasnt witnessed by all of them around the same time.
It would be like saying the native americans stole the story of christopher columbus from the europeans because the europeans wrote it down first. Yet we believe the native americans would have known christopher columbus around the same time as europeans did.