Today, September 2, back in 31 B.C., the Battle of Actium took place.
Actium was a sea battle between the forces of Octavian (soon to become the Emperor Augustus) and the forces of Marc Anthony and Cleopatara.
Octavian kicked their butts.
A year later, Marc Anthony and Cleopatara killed themselves.
The victory at Actium consolidated Octavian’s rule and thus is the traditional date for the beginning of the Roman Empire.
It was a decisive battle in Roman history that shaped the future of mankind. If Actium had not been fought or had come out differently than it did, we would not be living in the world we are. It was, as they might say on Star Trek, a crucial juncture in the timeline.