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
Setting Aside of the Old Parties
If the old, in every respect vicious, state of things was to be successfully got rid of and the commonwealth was to be renovated, it was necessary first of all that the country should be practically tranquillized and that the ground should be cleared from the rubbish with which since the recent catastrophe it was everywhere strewed. In this work Caesar set out from the principle of the reconciliation of the hitherto subsisting parties or, to put it more correctly--for, where the antagonistic principles are irreconcilable, we cannot speak of real reconciliation-- from the principle that the arena, on which the nobility and the populace had hitherto contended with each other, was to be abandoned by both parties, and that both were to meet together on the ground of the new monarchical constitution.
First of all therefore all the older quarrels of the republican past were regarded as done away for ever and irrevocably. While Caesar gave orders that the statues of Sulla which had been thrown down by the mob of the capital on the news of the battle of Pharsalus should be re-erected, and thus recognized the fact that it became history alone to sit in judgment on that great man, he at the same time cancelled the last remaining effects of Sulla's exceptional laws, recalled from exile those who had been banished in the times of the Cinnan and Sertorian troubles, and restored to the children of those outlawed by Sulla their forfeited privilege of eligibility to office. In like manner all those were restored, who in the preliminary stage of the recent catastrophe had lost their seat in the senate or their civil existence through sentence of the censors or political process, especially through the impeachments raised on the basis of the exceptional laws of 702. Those alone who had put to death the proscribed for money remained, as was reasonable, still under attainder; and Milo, the most daring condottiere of the senatorial party, was excluded from the general pardon.
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Reference address : https://www.ellopos.net/elpenor/rome/5-11-old-republic-new-monarchy.asp?pg=14