===Accession as Augustus and death===Between 303 and 305, Galerius began maneuvering to ensure that he would be in a position to take power from Constantius after the passing of Diocletian.
Zgornjo Britanijo je razdelil na provinci Maxima Caesariensis in Britannia Prima, Spodnjo Britanijo pa na provinci Flavia Caesariensis in Britannia Secunda.