Tylos, as the only country that begins with Babylonian primary culture, is the most common candidate for reforming Babylon, though theoretically any country can form Babylon if it converts to the Chaldean religion.
Babylon is a formable nation in the Middle East that can be formed by nations with Babylonian primary culture or Chaldean state religion, representing a revival of the ancient Babylonian state that was long the center of Mesopotamian culture and religion and conquered by the Achaemenid Empire in 539 BC.