How did feudalism govern knights and nobles

In feudalism, the king owned all of the land. The king granted fiefs (portions of land) to nobles (lords or barons) in return for loyalty, protection and service. The king could also grant fiefs to vassals (knights) in exchange for military service. Many knights were professional warriors who served in the lord's army. Hope this helped :)

Explanation:

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

c

the articles of confederation placed most of the power on the feds