198Romans createnew province ofMesopotamia
?? 198–Dec 211Caracalla,and then Geta,co-emperors
198–202Romans expandfortified lines inMauretania & Numidia
Mar 200–Jan 205Plautianus conspiresagainst Severan rule
200?Parthia recognizesCarmaniaas a client state
202–203Romans invade Garamantes,take Garama