The term "Severan" refers to a dynasty that ruled the Roman Empire from 193 to 235 AD. It began with Septimius Severus, who became emperor after a period of civil war. The Severan dynasty is known for its military expansion and significant architectural projects, including the construction of the Baths of Caracalla. The Severans also emphasized the importance of the military in governance, often promoting soldiers to high-ranking positions. This period saw the rise of several notable emperors, such as Caracalla and Geta, who were known for their reforms and the issuance of the Constitutio Antoniniana, granting citizenship to many free inhabitants of the empire.