Here is a map that roughly shows the spread of Noah's children.
Right: Japheth, Shem, and Ham (division of the earth into upper, middle, and lower regions)
When Moses fled from Egypt, he went south, further into Africa, and eventually marry's this woman from Ethiopia. Both black people but the cultures were very different.
Later on Moses gets a visitation from God and one of the miracles that God performed, was when Moses’ hands became leprous as snow (With the right people in mind, hopefully you’re now seeing this miracle with a better understanding). In Hollywood, when they showed the old Moses movie (The Ten Commandments), I wonder why they left out the leprosy miracle… Hmmm, maybe that miracle, for a white Moses, wouldn’t really seem like a big deal to the viewers.
Now you might say, "well the scriptures didn't call all of them niger." This is true, but remember, the only people that had the scriptures at this time, were ALL Israelites. The reason why the gentiles called Barnabas a niger (black) is because Barnabas was darker than ALL the other Israelites.