After Octavian came to power, how did the Roman Republic become the Roman Empire?

After Octavian took over as an un-voted leader by the senate, Rome lost it's Republican values and went to a Monarchy. This is why Historians refer to it as an Empire.

pan-africanism or pan-africanism is a political, philosophical, cultural and social movement that promotes african twinning, the defense of the rights of african people and the unity of africa under a single sovereign state, for all africans, both africa as of the african diasporas.

c it says nothing about connecting those 2 seas.