Concept:The end of the Era of Princes marked the restoration of strong imperial authority in Ethiopia.
Explanation:The Era of Princes, also known as Zamana Masafint, was a period of weak central rule and powerful regional lords.
When this era ended, the emperors of Ethiopia regained unified control over the state.
This led to the centralisation of political and military power in the hands of the emperors.
Therefore, the end of the Era of Princes was a key factor in strengthening the central authority of Ethiopian emperors.
Answer:B. centralising power in the hands of the Emperors of Ethiopia