Complex sentence: Tatar invasions of Eastern Europe were causing large numbers of people to leave their homes during this period, and a large number of refugees sought refuge at the castle of Gable, where Zdislava lived with her family and assisted these refugees as much as possible.
Split into simpler sentences: Tatar invasions of Eastern Europe were causing large numbers of people to leave their homes during this period. A large number of refugees sought refuge at the castle of Gable, where Zdislava lived with her family and assisted these refugees as much as possible.