Complex sentence: The Battle of Mingtiao was a legendary battle between the Xia Dynasty and the Shang Dynasty, resulting in a Shang victory which created the circumstances for the elevation of the Duke of Shang to the throne of China.
Split into simpler sentences: The Battle of Mingtiao was a battle between the Xia Dynasty and the Shang Dynasty. This semi-mythological battle resulted in a Shang victory which created the circumstances for the elevation of the Duke of Shang to the throne of China.