Because the Republic's administration was unable of dealing with the situation, Augustus, the first emperor, was appointed, and the establishment of an empire started. Under the emperor's control, the public assemblies all but vanished, and the Senate became more ceremonial. Augustus was given supreme executive power by the Senate, with powers considerably above those of a consul or tribune - consular imperium and tribunicia potestates - included the ability to not only introduce and veto laws, but also command the army.