Complex sentence: Actually, the royal servantswho were landowners directly subjected to the sovereign's power and obliged to fight in the royal armyassembled, forcing Andrew to dismiss Julius Kán and his other great officials and to issue a royal charter, the Golden Bull of 1222.
Split into simpler sentences: Actually, the royal servantswho were landowners directly subject to the monarch's power and obliged to fight in the royal armyassembled, forcing Andrew to dismiss Julius Kán and his other officials. Andrew was also forced issue a royal charter, the Golden Bull of 1222.