<span>During the Han Dynasty one of the advancements made in the subject of medicine was the use of </span><span>acupuncture</span>. Good luck!~ C:
To make sure the United States was prepared to fight any type of conflict
Serfs/Peasants would live on the protected land of the lord's manor in exchange for food and goods. The serfs/peasants basically fueled the manor and created self sufficiency, to the point where some lords even forbade Serfs/Peasants to leave their estate.
Hope this helped you