Which Roman emperor had the longest reign?
Augustus
Titus
Tiberius
Tiberius
Titus
Tiberius
Septimius Severus
Nero
Titus
Tiberius
Nero
Septimius Severus
Tiberius
Titus
Nero
Tiberius
Marcus Aurelius
Domitian
Nero
Septimius Severus
Tiberius
Titus
Marcus Aurelius
Domitian
Nero
Trajan
Tiberius
Septimius Severus
Titus
Domitian
Marcus Aurelius
Nero
Trajan
Tiberius
Domitian
Marcus Aurelius
Nero
Augustus
Trajan
Tiberius
Maximinus Thrax
Septimius Severus
Titus
Claudius
Domitian
Augustus
Nero
Trajan
Marcus Aurelius
Tiberius
Maximinus Thrax
Vespasian
Augustus
Titus
Titus Augustus
Domitian
Trajan
Nero
Septimius Severus
Marcus Aurelius
Claudius
Tiberius
Titus Aelius
Augustus
Constantine the Great
Vespasian
Trajan
Antoninus Pius
Domitian
Titus the Great
Titus, Trajan
Nero
Marcus Aurelius
Titus Augustus
Tiberius
Titus
Augustus
Trajan
Septimius Severus
Vespasian
Constantine the Great
Roman Emperor Nero
Domitian
Claudius
Nero
Titus Aelius
Titus Livius
Marcus Aurelius
Hadrian
Tiberius
Augustus
Titus the Great
Roman Emperor Trajan
Trajan
Vespasian
Domitian
Roman Emperor Nero
Titus Augustus
Nero
Septimius Severus
Titus, Trajan
Hadrian
Titus
Emperor Trajan
Marcus Aurelius
Augustus
Trajan
Tiberius
Antoninus Pius
Claudius
Roman Emperor Trajan
Titus Aelius
Vespasian
Domitian
Titus Livius
Nero
Hadrian
Titus the Great
Maximinus Daia
Augustus
Trajan
Tiberius
Titus Augustus
Emperor Trajan
Septimius Severus
Marcus Aurelius
Roman Emperor Tiberius
Vespasian
Titus
Domitian
Hadrian
Nero
Augustus
Titus, Trajan
Trajan
Maximinus Daia
Tiberius
Emperor Trajan
Titus the Great
Titus Livius
Marcus Aurelius
Vespasian
Roman Emperor Hadrian
Roman Emperor Tiberius
Hadrian
Domitian
Claudius
Nero
Augustus
Titus Augustus
Trajan
Constantine I
Septimius Severus
Antoninus Pius
Tiberius
Trajan, Trajan
Titus
Hadrian
Roman Emperor Constantine I
Marcus Aurelius
Roman Emperor Hadrian
Emperor Trajan
Domitian
Augustus
Roman Emperor Titus
Nero
Trajan
Titus Livius
Constantine I
Titus, Trajan
Titus Augustus
Tiberius
Trajan, Trajan
Hadrian
Septimius Severus
Augustus
Roman Emperor Augustus
Titus
Marcus Aurelius
Domitian
Trajan
Nero
Titus the Great
Roman Emperor Titus
Tiberius II
Tiberius
Hadrian
Emperor Trajan
Titus Livius
Trajan, Trajan
Augustus
Trajan
Titus, Trajan
Antoninus Pius
Emperor Trajan of Rome
Domitian
Marcus Aurelius
Titus Augustus
Nero
Roman Emperor Augustus
Claudius