The Year of the Four Emperors in Roman history refers to the tumultuous year of 69 CE, during which Rome saw the rapid succession of four emperors: Galba, Otho, Vitellius, and Vespasian. This period of civil war followed the death of Emperor Nero, leading to political instability and power struggles among rival factions. Each emperor faced challenges to their rule, with Vitellius and Otho engaging in battles for supremacy. Ultimately, Vespasian emerged victorious, establishing the Flavian dynasty and restoring relative stability to the empire, which transformed the Roman political landscape for years to come.