So, from Genesis in the Bible, God created the heavens and the earth, created Adam and Eve, Cain and Abel were their sons, Cain killed Abel, then God "cursed" Cain and Cain went on to the Land of Nod where he married and had children of his own.
OK, so, apparently there were other people on earth at that time that the Bible does not address. No other mention of the Land of Nod is mentioned in the Bible.
So, where did these other people come from? The Bible does not say and we are left to imagine that for ourselves.
Given that the ages of Cain and Abel, or the ages of Adam and Eve are not mentioned at this point we could "assume" that perhaps Adam and Eve had other children, who may have also had children and they developed a civilization in the Land of Nod, where Cain found his wife.
We do know from the Bible that Adam lived 800-900 years I believe, so that may be the answer....but we really do not know.
The name Adam can be translated into the word man, or mankind.
I suspect that Genesis was worded for the people of that time so that there would be some understanding of how the earth and mankind came to be and how God was the Creator.
I also suspect that all of the races (Adam - mankind) were created at the same time at different places all over the world.
Dark skinned people with "nappy" hair (African), light skinned with blonde hair, blue eyes in the Scandanavian countries, slant eyed people with "yellow" skin (Asia), bold facial bones, "red skin" and straight black hair (American Indian), etc., etc., hardly seem the result of procreation of Adam and Eve to me, or from Noah's family for that matter.
I have read where some think that the races "happened" at the time of the Tower of Babel incident, when the different languages came to be, but again, we do not know and it is only speculative because The Bible does not say.
The Land of Nod and the origin of the different Races.
What's your thoughts or opinions on the above?