Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Then the democracy conquered in questions of principle, and in return for that victory conceded the highest offices of state to its two confederates; now it had become more practical and grasped the supreme civil and military power for itself, while concessions were made to its allies only in subordinate points and, significantly enough, not even the old demand of Pompeius for a second consulship was attended to. Then the democracy sacrificed itself to its allies; now these had to entrust themselves to it. All the circumstances were completely changed, most of all, however, the character of the democracy itself.
No doubt it had, ever since it existed at all, contained at its very core a monarchic element; but the ideal of a constitution, which floated in more or less clear outline before its best intellects, was always that of a civil commonwealth, a Periclean organization of the state, in which the power of the prince rested on the fact that he represented the burgesses in the noblest and most accomplished manner, and the most accomplished and noblest part of the burgesses recognized him as the man in whom they thoroughly confided. Caesar too set out with such views; but they were simply ideals, which might have some influence on realities, but could not be directly realized.
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Reference address : https://www.ellopos.net/elpenor/rome/5-06-pompeius-coalition-pretenders.asp?pg=20