a revolt by the Turdetani. Cato returned to Rome in 194, leaving two praetors in charge of the two Iberian provinces. In the late Roman Republic, Hispania remained divided like Gaul into a "Nearer" and a "Farther" province, as experienced marching overland from Gaul: Hispania Citerior (the Ebro region), and Ulterior (the Guadalquivir region). The battles in Hispania during the 1st century BC were largely confined to the north. In the reorganization of the Empire in 14 BC, Baetica was made a senatorial province governed by a proconsul who had formerly been a praetor. Fortune smiled on rich Baetica, which was Baetica Felix, and a dynamic, upwardly-mobile social and economic middling stratum developed there, which absorbed freed slaves and far outnumbered the rich elite. The Senatorial province of Baetica became so secure that no Roman legion was required to be permanently stationed there. Legio VII Gemina was permanently stationed to the north, in Hispania Tarraconensis. Hispania Baetica was divided into four conventūs, which were territorial divisions like judicial circuits, where the chief men met together at major centers, at fixed times of year, under the eye of the proconsul, to oversee the administration of justice: the conventus Gaditanus (of Gades, or Cádiz), Cordubensis (of Cordoba), Astigitanus (of Astigi, or Écija), and Hispalensis (of Hispalis, or Seville). As the towns became the permanent seats of standing courts during the later Empire, the conventūs were superseded (Justinian's Code, i.40.6) and the term conventus is lastly applied to certain bodies of Roman citizens living in a province, forming a sort of enfranchised corporation, and representing the Roman people in their district as a kind of gentry; and it was from among these that proconsuls generally took their assistants. So in spite of some social upsets, as when Septimius Severus put to death a number of leading Baetians— including women — the elite in Baetica remained a stable class for centuries. Columella, who wrote a twelve volume treatise on all aspects of Roman farming and knew viticulture, came from Baetica. The vast olive plantations of Baetica shipped olive oil from the coastal ports by sea to supply Roman legions in Germania. Amphoras from Baetica have been found everywhere in the Western Roman empire. It was to keep Roman legions supplied by sea routes that the Empire needed to control the distant coasts of Lusitania and the northern Atlantic coast of Hispania. Baetica was rich