Identify two events that octavian to become the only ruler of the roman empire

1 Julius Caesar named Octavian as his heir.

2 Octavian successfully invaded Egypt, causing his rival Mark Antony to kill himself.

Explanation: Two of the most important events that helped Octavian to become the only ruler of the Roman Empire were that he was named heir by Julius Caesar himself. There was a triumvirate formed by Octavian, Mark Antony and Marcus Aemilius, however, he had conflicts with Mark Antony, he invaded Egypt and he became the only ruler after his rival killed himself.

answer; ///i do believe that the correct answer is ; /// (d)/return to polytheistic

i would say b. research typically uses a variety of sources