About Polybius
Polybius was an ancient Greek historian of the middle Hellenistic period. He is noted for his Histories, a universal history documenting the rise of Rome in the Mediterranean in the third and second centuries BC. It covers the period 264–146, recording in detail events in Italy, Iberia, Greece, Macedonia, Syria, Egypt, and Africa, and documents the Punic Wars and Macedonian Wars among many others.
Biography source:
Wikipedia
