While communities in Alexandria and Rome dated back to before the Maccabean Revolt, the population in the Jewish diaspora expanded after the Pompey's campaign in 62 BCE. Under the Hasmonean princes, who were at first high priests and then kings, the Jewish state displayed even a certain luster and annexed several territories. Soon, however, discord within the royal family and the growing disaffection of the pious, the soul of the nation, towards rulers who no longer evinced any appreciation of the real aspirations of their subjects made the Jewish nation easy prey for the ambitions of the now increasingly autocratic and imperial Romans, the successors of the Seleucids. In 63 BCE Pompey invaded Jerusalem, the Jewish people lost their political sovereignty and independence, and Gabinius subjected the Jewish people to tribute.