What do the figures indicate about child labor during this part of the industrial revolution? children played a significant role in the workforce. children made up a large portion of the workforce. in 1861, new laws forced factories to stop hiring children. in 1861, social pressure forced factories to stop hiring children.

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.

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