Year of the Four Emperors

Target entity: Year of the Four Emperors
Context triple: [Vespasian, cameToPowerDuring, Year of the Four Emperors]

• A. Constantinian civil war
  The Constantinian civil war was a series of early 4th-century conflicts within the Roman Empire that culminated in Constantine the Great’s victory over rival emperors and the consolidation of his sole rule.
• B. Roman–Parthian War of 161–166
  The Roman–Parthian War of 161–166 was a major conflict between the Roman Empire and the Parthian Empire during the reign of Marcus Aurelius and Lucius Verus, marked by Roman campaigns in Armenia and Mesopotamia that temporarily expanded Roman influence in the East.
• C. Crisis of the Third Century
  The Crisis of the Third Century was a period of severe political instability, military upheaval, economic collapse, and external invasion that nearly caused the disintegration of the Roman Empire between roughly 235 and 284 CE.
• D. Marcomannic Wars
  The Marcomannic Wars were a series of mid-2nd century conflicts in which the Roman Empire fought Germanic and other tribes along the Danube frontier, severely testing imperial military strength under Emperor Marcus Aurelius.
• E. Roman civil wars
  The Roman civil wars were a series of internal conflicts during the late Roman Republic in which rival political and military leaders, culminating in the struggle between Octavian and Mark Antony, fought for supreme control of Rome and ultimately paved the way for the Roman Empire.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Year of the Four Emperors
Target entity description: The Year of the Four Emperors was a tumultuous period of civil war in 69 AD during which four different men successively claimed the Roman imperial throne before stability was restored under Vespasian.

• A. Constantinian civil war
  The Constantinian civil war was a series of early 4th-century conflicts within the Roman Empire that culminated in Constantine the Great’s victory over rival emperors and the consolidation of his sole rule.
• B. Roman–Parthian War of 161–166
  The Roman–Parthian War of 161–166 was a major conflict between the Roman Empire and the Parthian Empire during the reign of Marcus Aurelius and Lucius Verus, marked by Roman campaigns in Armenia and Mesopotamia that temporarily expanded Roman influence in the East.
• C. Crisis of the Third Century
  The Crisis of the Third Century was a period of severe political instability, military upheaval, economic collapse, and external invasion that nearly caused the disintegration of the Roman Empire between roughly 235 and 284 CE.
• D. Marcomannic Wars
  The Marcomannic Wars were a series of mid-2nd century conflicts in which the Roman Empire fought Germanic and other tribes along the Danube frontier, severely testing imperial military strength under Emperor Marcus Aurelius.
• E. Roman civil wars
  The Roman civil wars were a series of internal conflicts during the late Roman Republic in which rival political and military leaders, culminating in the struggle between Octavian and Mark Antony, fought for supreme control of Rome and ultimately paved the way for the Roman Empire.
• F. None of above. chosen