Feudalism is the prevailing social framework in medieval Europe, in which the honorability held grounds from the Crown in return for military administration, and vassals were thusly inhabitants of the nobles, while the workers were obliged to live on their ruler's property and give him reverence, work, and an offer of the deliver, notionally in return for military insurance.
Answer:
Gold and other precious natural metals; silver and copper.
Explanation:
a. because it is relatively stable
John Calvin was a reformed based in Switzerland that believed in Martin Luther's ideas about faith and salvation. He was both a pastor and a theologian.