City also known as Bablod, Bablot. 
The first tower built 50,000 years after death of Nod, that is, about 150,000 years ago.  The largest group of Nodites, almost one half, desired to see the tower built as a memorial of Nodite history and racial superiority.  The second attempt to rebuild by Andites, 12,000 years ago, failed. 
The third effort to build was by Andites that assimilated the civitization of Mesopotamia at the beginning of historic annals and adopted the term as their national name, Babylon. 
See also: UB 77:3.