What does President Bill Clinton's impeachment trial reflect about modern US politics?

Congress conducts more thorough investigations of judicial nominees. Campaign finances are monitored by a regulatory agency. Media outlets focus more on policy issues than on the actions of elected officials

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:

b)

it created free trade throughout the colonial territories.