The duties of knights and nobles clearly show the importance
of warfare in the Middle Ages due to the fact that there main objective is to
serve in the battle. The knight was
expected to be trained for a war and display courage during the battle and
serves their loyalty to their lords while nobles are tied to farming which provides food to the empire.
Labor unions were set up in order to promote: A. Better-working conditions; F. Demand for higher wages; and D. Eight-hour workdays. Hope that assists you.