There's archaeological fact, and history, OUTSIDE of the Bible that does, in fact, have bearing on the material in the Bible, and vice versa.
It's a document of it's time and hardly just made up out of the air.
Remember, the Bible spoke of the ancient people we now know as the Sumerians ~ who invented writing. This was thought of as a fairy tail for centuries and then one day the Sumerians were discovered and everything everyone knew about the Bible has been subject to revision ever since.
I suggest you get out more, read more, look into what archaeologists have discovered, study what caste systems are all about, etc. You'll enjoy your Bible reading more if you know what it's talking about!
Like I said you are building air castle fairy tales out of nothing but your own imagination. You do not even have your historical facts right in the post you just made.
Suggest that you go back and read a little more before you humiliate your self further.