From eRepublik Official Wiki
Beta was the first phase of creation of eRepublik. Released on November 20, 2007
with only few hundred citizens that were set to shape the eRepublik.
Main characteristics of the beta were mayors and cities that they control. More information about beta can be found on Beta:BETA page and the whole list of articles can be found in Category:Beta.
The beta lasted for almost a year and was finally taken down on October 12, 2008 and replaced with V1.