On July 31, 30, BC the Battle of Alexandria took place. Mark Antony achieved a minor victory over Octavian, but most of his army deserted leading to Octavian's invasion of Egypt. From the article:
"In 34 BCE, despite the fact that Antony’s Parthian campaign had been an extravagant failure, Antony and Cleopatra celebrated a mock Roman Triumph in the streets of Alexandria. Crowds flocked to the Gymnasium to see the couple seated on golden thrones surrounded by their children, and Antony made a proclamation known today as the ‘Donations of Alexandria’. In this declaration Antony distributed lands held by Rome and Parthia amongst Cleopatra and their children, and proclaimed Caesarion as Caesar’s legitimate son. Not surprisingly, the ‘Donations of Alexandria’ caused outrage in Rome, where the rumour began to spread that Antony intended to transfer the empire’s capital from Rome to Alexandria. In 32 BCE, Octavian had the Senate deprive Antony of his powers and declare war against Cleopatra, calling her a whore and a drunken Oriental. To avoid another civil war, Antony was not mentioned in the declaration, but this was to no avail and Antony decided to join the war on Cleopatra’s side.
THE BATTLE OF ACTIUM & THE INVASION OF EGYPT
The culmination of the war came at the naval Battle of Actium, which took place near the town of Preveza in northwestern Greece, on September 2, 31 BCE. Here Mark Antony and Cleopatra’s combined force of 230 vessels and 50,000 sailors were defeated by Octavian’s navy commanded by Marcus Vipsanius Agrippa, effectively handing control of the Roman world over to Octavian. In 30 BCE Octavian invaded Egypt and laid siege to Alexandria. Hopelessly outnumbered, Anthony’s forces surrendered and, in the honourable Roman tradition, Antony committed suicide by falling on his sword.
THE DEATH OF CLEOPATRA
After Antony’s death Cleopatra’s was taken to Octavian who informed her that she would be brought to Rome and paraded in the streets as part of his Triumph. Perhaps unable to bear the thought of this humiliation, on August 12, 30 BCE Cleopatra dressed in her royal robes and lay upon a golden couch with a diadem on her brow. According to tradition (found in ancient historian Plutarch, for example) she had an asp (an Egyptian cobra), brought to her concealed in a basket of figs, and died from the bite. Two of her female servants also died with her. The asp was a symbol of divine royalty to the Egyptians, so by allowing the asp to bite her, Cleopatra became immortal. Other historians (including Joyce Tyldesley) believe that Cleopatra used either a poisonous ointment or a vial of poison to commit suicide."