55 The Romans compel the Parthians to evacuate Armenia. 58 Vologases again attacks Armenia and brings on war with Rome. Revolt of Hyrcania. Corbulo destroys Artaxarta and occupies Tigranocerta (59). 61 Peace restored in Hyrcania. 62 War with Rome resumed. The Romans are repulsed. 63 Corbulo crosses the Euphrates, and the Parthians sue for peace. 72 The Alani drive Pacorus of Media from his throne. 75 The Alani enter Parthia. Vologases appeals in vain to Vespasian. 78 About this date Vologases dies. He seems to have been succeeded by two kings, =Vologases II= and =Pacorus II=, probably brothers, and reigning together. 81 =Artabanus IV= appears to be the king in this year. He protects Terentius Maximus, who pretends to be Nero. Parthia is torn with civil wars. 93 Pacorus II is sole king. 110 Pacorus sells the crown of Edessa to Abgar VII. Death of Pacorus. His brother (or perhaps son) =Chosroes= or =Osroes= succeeds. Vologases II reappears as a rival king, also a =Mithridates= or =Meherdates VI=. Parthia is completely upset with civil war which goes on until 113 Chosroes wrests Armenia from King Exedares and gives it to Parthamariris, both sons of Pacorus. 114 The emperor Trajan, indignant at Chosroes’ act, seizes Armenia and makes it a Roman province. 115 Trajan takes Ctesiphon and Seleucia. 116 Revolt in Parthia with Mithridates VI at its head. Death of Mithridates, and his son Sinatruces takes his place. Chosroes regains Nisibis, Seleucia, and Edessa. 117 Trajan crowns =Parthamaspates= king of Parthia, deposing Chosroes. Death of Trajan. Hadrian withdraws Roman soldiers and Chosroes recovers throne. Parthamaspates expelled. 130 About this date Chosroes dies and Vologases II rules as sole king. The influence of Rome preserves peace in the kingdom. 148 Death of Vologases, aged ninety-six, having reigned seventy-one years. =Vologases III= succeeds. He continues the peace with Rome until, 162 when, after death of Antoninus Pius, Vologases enters Armenia and expels the king. The greatest war between Rome and Parthia ensues. 164 Aridius Cassius drives Vologases from Syria, enters Babylonia, and burns Seleucia, the most important city of the East. 165 Great plague, originating in Parthia, spreads over the whole world. 166 Peace with Rome. Mesopotamia becomes a Roman province. Parthia begins steadily to decline. 191 Death of Vologases III. =Vologases IV= succeeds. 194 Vologases permits the Medes to assist Orrhœne in revolt against the Romans. 196 The Parthians ravage Mesopotamia. 199 Severus surprises the Parthians and takes Seleucia, Coche, and Ctesiphon. 201 Siege of Atra by Severus, who is compelled to raise it. 209 Vologases succeeded by his son, =Vologases V=.