Which of the following best describes the significance of the great strike of 1877? a. it was the first strike supported by skilled and unskilled workers. b. it was the first nationwide strike in the united states. c. it resulted in the worst violence in the history of the labor movement. d. it resulted in the first legislation protecting the rights of labor unions.

The correct answer is B./It was the first nationwide strike in the United States.

b. germany and italy

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: