Answer:
C. A group of farmers leave their homes to search for more fertile land elsewhere.
Explanation:
They left voluntary because no one else forced them just themselves looking for better land. A and B were both forced by war. D was also forced because they were forced by the law.
The main way in which clause 39 of the Magna Carta was influential to the American Revolution was that it prohibits people from being arrested or punished without due process of the law, which inspired the Founding Fathers, who were adamant about ensuring personal freedom.
France played a role in American Revolutionary war.
Unions played a very important role in improving wages, and work conditions. They outlawed child labour, and made work days 8 hours instead of 12. Unions started to improve safety and work conditions. They also worked towards equal pay for women. There is so much more unions have done, these are just a few small examples.
I hope this helps.