Which best explains a major dissatisfaction of the merchant class with the articles of confederation?
a).suffrage was limited to the landed gentry.
b).there was no provision for a uniform currency.
c).the power of congress to levy and collect taxes was unlimited.
d).it caused european nations to enact trade barriers against the united states.

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: