Complex sentence: In 920 AD, Conrad's successor was the German king, Henry the Fowler of the Ottonian dynasty and recognized Arnulf as a duke, confirming his right to appoint bishops, coin money and issue laws.
Split into simpler sentences: In 920 AD, Conrad's successor was the German king, Henry the Fowler of the Ottonian dynasty. Henry recognized Arnulf as duke, confirming his right to appoint bishops, coin money and issue laws.