What became the prevalent method in Europe for naming years in 526 BC by the post-Roman Republic period of the ancient Roman civilization ?
526 BC:  The denomination 526 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Roman Empire:  "Basileia tōn Rhōmaiōn" ) was the post-Roman Republic period of the ancient Roman civilization, characterized by government headed by emperors and large territorial holdings around the Mediterranean Sea in Europe, Africa and Asia.
Anno Domini calendar era