This region was totally conquered by the Romans in the 1st century BC. The definitive defeat of the Rhaetians, near Bolzano, occurred during the military campaigns in the Alps of Drusus and Tiberius (16-17 BC). Trento became a Roman "municipium" in the 40s BC. During the reign of Emperor Claudius (41-54 AD) Trentino was integrated into the Imperial road network with the construction of the Via Claudia Augusta Padana (from Ostiglia to the Resia Pass) and the Via Augusta Altinate (from Treviso to Trento, passing through the Valsugana). Claudius also issued an Edict, contained in the "Tabula clesiana", which extended Roman citizenship to the residents of this region. By the fourth century the area was fully latinisated.