To protect our country! I hope this helps :D!
The answer would be the fourth option. The townspeople were throwing snow and other stuff at the soldiers who responded by shooting.
Answer:
Xiongnu, Jie, Qiang and Di.
One reason why peasants might have been interested in fighting in The Crusades is because this would have enriched the crusading country--which would have led to an increase in their standard of living (to a certain extent).