Complex sentence: In the medieval period (500 C.E. -1400 C.E.) in Europe there were a variety of different authority forms throughout the region; which included feudal lords, empires, religious authorities, free cities, and other authorities.
Split into simpler sentences: In the medieval period (500 C.E. -1400 C.E.) in Europe, there were a variety of authority forms throughout the region. These included feudal lords, empires, religious authorities, free cities, and other authorities.