Why did Octavian adopt the title “Augustus” when the Senate names him Emperor of Rome?

Instead of following Caesar's example and making himself dictator, Octavian in 27 BC founded the principate, a system of monarchy headed by an emperor holding power for life. His powers were hidden behind constitutional forms, and he took the name Augustus meaning 'lofty' or 'serene'.

or

Upon his adoption, Octavius assumed his great-uncle's name Gaius Julius Caesar. ... Historians usually refer to the new Caesar as Octavian during the time between his adoption and his assumption of the name Augustus in 27 BC in order to avoid confusing the dead dictator with his heir.

Explanation:

- "the past is made of multitudinous items ranging from anything that can be collected, recollected or assessed to originate in the past. as such, the past is a gallimaufry of particulars that may not have been related in any way. however, the human mind seeks organization to understand concepts and other things. the human mind therefore seeks relationships in explaining and studying the past. history being a humanity, dictates that historians have to serve this human trait by bringing structure to details of the past. historians do this by creating interpretive frameworks that capture as many details as possible."

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can you attach the graph and answer options (: