| Description | Emperor |
| I established the Roman Principate in 27 BC, becoming the first Roman Emperor. | |
| Mount Vesuvius erupted during my reign, destroying the city of Pompeii. | |
| I composed the Edict of Milan in AD 313, granting Christians religious tolerance in the Empire. | |
| During my youth, I was given the nickname, 'Little Boot.' | |
| I was the victor of the Year of the Four Emperors, establishing the Flavian Dynasty. | |
| The Roman Empire reached its greatest extent during my reign in AD 117. | |
| I was the first emperor not of Italian origin, with my descendants hailing from the city of Carthage. | |
| I established the system of the Tetrarchy, which was quickly abandoned following my death. | |
| I was the final emperor to rule over both western and eastern halves of the Empire. | |
| I was the younger son of Vespasian, ruling until my assassination in AD 96. | |
| | Description | Emperor |
| I ruled for only 86 days from January to March of AD 193. | |
| The Great Fire of Rome occurred during my reign in AD 64. | |
| I am Augustus' stepson, and subsequently, his successor. | |
| A famous wall between the modern boundary of England and Scotland bares my name. | |
| I was emperor until AD 192, and was portrayed as the antagonist in the 2000 film, 'Gladiator.' | |
| I was the only of Constantine's sons to die of natural causes. | |
| I was married to four wives; the final one, Agrippina, may have poisoned me. | |
| I ruled alongside my step-brother, Lucius Verus, until his death in AD 169. | |
| I am currently known by the Romanized name of the Syrian sun-god that I worshiped. | |
| The 1000th year anniversary of Rome was celebrated during my reign. | |
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