 Complete the following phrase:  In 1941, George Glenn Cameron suggested that Shamash-eribas revolt had taken place in Xerxess fourth year 482 BC, coinciding with Xerxes supposedly dropping the title king of Babylon. In 1992, Pierre Briant proposed that a better fit would be Xerxess sixth year 480 BC, since a rebellion in Babylon could help explain why Xerxes mismanaged 