The Story of Nimrod
Sadly, history has been condensed down in the Biblical account as it brings us the salient messages in one grand volume. Periods thousands of years long can be covered in just a few chapters. There is so much more to these stories.
Nimrod was more than the leader of a great city called Babylon. He opened the trade route from teh east to the west. The many cites that he is credited to have founded, for a line from the mideast to the east.
Before you get to the story of Abraham, you need to know why the world was in the condition that he lived.