GENERAL KNOWLEDGE

Detailed explanation-1: -Unsurprisingly, the title of the “first greatest Roman emperor” goes to Caesar Augustus. While in his youth, Octavian plunged Rome into one of the bloodiest civil wars and toppled the Roman Republic; as emperor Augustus, he created the strong foundation for one of the truly greatest of all empires in human history.

Detailed explanation-2: -The titles customarily associated with the imperial dignity were imperator ("commander", which emphasizes the emperor’s military supremacy and is the source of the English word emperor), Caesar, and Augustus ("majestic” or “venerable", which had tinges of the divine).