Battle of Ipsus
The Babylonian War was a conflict fought between 311–309 BC between the Diadochi Antigonus Monophthalmus and Seleucus, ending in a victory for the latter. The conflict ended any possibility of restoration of the empire of Alexander the Great, a result confirmed in the Battle of Ipsus. It also marked the birth of the Seleucid Empire by giving Seleucus control over the eastern satrapies of Alexander's former empire.