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acta, in ancient Rome, minutes of official business (Acta senatus) and a gazette of political and social events (Acta diurna). The Acta senatus, or Commentarii senatus, were the minutes of the proceedings of the Senate, and, according to Suetonius, they were first published in 59 bce. They were available to senators, but the emperor Augustus did not allow access to the wider public. From the reign of his successor, Tiberius, in the 1st century ce,...