With respect to the major plotline, the movie is fairly accurate. Cleopatra VII [c. 69 BCE - 30 BCE] did have a son, Ptolemy Caesar (nicknamed Caesarion), presumably with Julius Caesar in 47 BCE. Caesar did place Cleopatra on the Egyptian throne, with her brother Ptolemy XIV as co-ruler. Caesar was indeed assassinated on the Ides of March, 44 BCE by a group of senators, led by Marcus Junius Brutus. After Caesar's death, Cleopatra did forge an alliance with Mark Antony, one of Caesar's three successors. Antony did engage in the losing naval battle of Actium in September 31 BCE against Octavian, future emperor of the Roman Empire as Caesar Augustus. Cleopatra did kill herself the following year, although there is some debate among historians as to whether she poisoned herself or allowed herself to be bitten by an asp. Beyond those accuracies, there are also many inaccuracies as might be expected in a Hollywood historical drama. For example, there was no mention made of Cleopatra's sister Arsinoe nor of the three children she bore to Mark Antony. Although Cleopatra was queen of Egypt, Alexandria was founded by Alexander the Great, king of Macedon (Greece), and was decidedly Hellenistic, not Egyptian, in style. Other minor boo-boos are too great to mention.