What's the purpose of grievances.

Explanation:

Grievances in historic reference are hardship caused by an authority over its subjects. During an uprising, the subjects would list the hardships they had suffered and ask for resolution and compensation. In many cases, that involved overturning the authority.

The Declaration of Independence contained a list of grievances the colonists had against King George.

30 and 44 are b

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: