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 his intimate relations, but because there was an insurrection in Britain under a certain Queen Boadicea, and the Roman forces suffered a great disaster (61 A.D.), and because there was a destructive earthquake in Southern Italy. The Roman population, true to its Etruscan streak, never religious and always superstitious, did not mind a wicked Cæsar, but it did object strongly to an unpropitious one. The Spanish legions rose in insurrection under an elderly general of seventy-three, Galba, whom they acclaimed emperor. He advanced upon Rome carried in a litter. Nero, hopeless of support, committed suicide (68 A.D.).

Galba, however, was only one of a group of would-be emperors. The generals in command of the Rhine legions, the Palatine troops, and the eastern armies, each attempted to seize power. Rome saw four emperors in a year, Galba, Otho, Vitellus, and Vespasian; the fourth, Vespasian (69-79 A.D.), from the eastern command, had the firmest grip, and held and kept the prize. But with Nero the line of Cæsars born or adopted ended. Cæsar ceased to be the family name of the Roman emperors, and became a title, Divus Cæsar, the Cæsar god. The monarchy took a step forward towards orientalism by an increased insistence upon the worship of the ruler.

Vespasian (69 to 79 A.D.) and his sons Titus (79 A.D.) and Domitian (81 A.D.) constitute, as it were, a second dynasty, the Flavian; then after the assassination of Domitian came a group of emperors related to one another not by blood, but by adoption, the adoptive emperors. Nerva (96 A.D.) was the first of this line, and Trajan (98 A.D.) the second. They were followed by the indefatigable Hadrian (117 A.D.), Antoninus Pius (138 A.D.), and Marcus Aurelius (161 to 180 A.D.). Under both the Flavians and the Antonines the boundaries of the empire crept forward again. North Britain was annexed in 84 A.D., the angle of the Rhine and Danube was filled in, and what is now Transylvania was made into a new province, Dacia. Trajan also invaded Parthia and annexed Armenia, Assyria, and Mesopotamia. Under his rule the empire reached its maximum extent. Hadrian, his successor, was of a cautious and retractile disposition. He abandoned these new eastern conquests of Trajan's, and he also abandoned North Britain. He adopted the Chinese idea of the limiting wall against