You believe that these 3 sons of one mother and father are of 3 different races? You believe that Ham became a black man because "he saw his father's nakedness"?
They became the three different families because the DNA code was in their genes.
Ham seeing his father's nakedness had nothing to do with the family line that would come from him.
Now, when you trace each families genealogy, those are the nations that are created from each son.
[ Can a Etphiopian change his skin? (Jer.13:23), well the line of Abraham, Issac and Jacob cannot change their racial line.]
If an "Ethiopian can't change his skin", then how did Noah's sons change theirs? Also, no one has said that the children of Abraham, Issac and Jacob changed their racial line.
Noah's sons didn't change anything.
We do not know the DNA makeup of Noah's wife or the Son's wives.
And the Children of Abraham, Issac, and Jacob haven't become anyone else, they are Jews, Israelites, Hebrews, heirs to the Covenant Promises of God.
And no other family line is.
They became the three different families because the DNA code was in their genes.
FTD, when was the last time you saw one man and his wife have 3 different races of children? It doesn't happen and it didn't happen.
The clue to the answer is found in Gen.6:19. Look up the word "flesh" in your Strong's Concordance. That is where the races came from. Most of our churches don't teach that either but God does.