Despite its military strength, the Empire made few efforts to expand its already vast extent; the most notable being the conquest of Britain, begun by emperor Claudius (47), and emperor Trajan's conquest of Dacia (101–102, 105–106). In the 1st and 2nd century, Roman legions were also employed in intermittent warfare with the Germanic tribes to the north and the Parthian Empire to the east. Meanwhile, armed insurrections (e.g. the Hebraic insurrection in Judea) (70) and brief civil wars (e.g. in 68 AD the year of the four emperors) demanded the legions' attention on several occasions. The seventy years of Jewish–Roman wars in the second half of the 1st century and the first half of the 2nd century were exceptional in their duration and violence. An estimated 1,356,460 Jews were killed as a result of the First Jewish Revolt; the Second Jewish Revolt (115–117) led to the death of more than 200,000 Jews; and the Third Jewish Revolt (132–136) resulted in the death of 580,000 Jewish soldiers. The Jewish people never recovered until the creation of the state of Israel in 1948.