Why did president ford pardon former president nixon? question 30 options: all of these dragging out watergate questions was distracting country from present issues president ford was concerned that former president nixon would lead an uprising if he was not pardoned secretary of state henry kissinger believed that it would to ease tensions in vietnam

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: