Question: What building was associated with a Roman politician and general who played a critical role in the transformation of the Roman Republic from an oligarchy into the autocratic Roman Empire?
Sentence (from "Arch of Augustus, Rome"): Built in 20 BC, it commemorated the return of the Parthian standards and replaced the earlier Arch of Octavian built on the same spot in 29 BC, to commemorate the Battle of Actium (31 BC) against Mark Antony and Cleopatra.
Relevant evidence: Yes