Darius's European expedition was a major event in his reign, which began with the invasion of Thrace, after which he left Megabyzus to conquer Thrace, returning to Sardis to spend the winter.
Darius's European expedition was a major event in his reign. A major event in his reign was returning to Sardis. This was to spend the winter. His reign began with the invasion of Thrace. He left Megabyzus to conquer Thrace after the invasion of Thrace.