Battle of Actium

On August 1, 30 BC, Octavian (later known as Augustus) entered Alexandria, Egypt, bringing it under the control of the Roman Republic. An excerpt from the article:

"Back in Alexandria, Cleopatra planned their next move. Realizing she could not hold Alexandria against Octavian, she suggested they leave for Spain, where they could lay hold of the silver mines and raise a new army. Antony was so completely demoralized by his defeat, however, that he did not even respond to word from Canidius Crassus asking what should be done with the legions in Asia and all he seems to have done is drink.

Octavian arrived outside of Alexandria in July of 30 BCE, and this immediate threat roused Antony from his depression. He mobilized his forces and struck at Octavian's advance forces, winning the day. By the morning of 1 August 30 BCE, however, most of his troops had deserted, recognizing that they were fighting for the losing side. Later that day, upon hearing that Cleopatra was dead, Antony stabbed himself, asking to be brought to wherever her body was being kept. The rumor was false, however, and Antony lived only long enough to die in Cleopatra's arms in the citadel where she had taken refuge. Octavian then entered the city where he presented Cleopatra with his terms which she had no choice but to accept. She asked for and was granted time to put her affairs in order. Rather than be taken by Octavian to Rome as a prize in a Roman triumph, Cleopatra killed herself on 30 August 30 BCE."