When Emperor Antoninus Pius died in 161, Marcus Aurelius accepted the throne on the condition that he and Lucius Verus be made joint emperors—an unprecedented political arrangement in the Roman Empire. Aurelius likely sought the partnership so Verus could directly command Roman legions in the empire’s nearly constant war efforts. Verus was authoritative enough to command the loyalty of the troops and powerful enough that he had little incentive to overthrow Marcus. Did Verus remain loyal? Discuss
Source: The Free Dictionary