Bias: Bias refers to favoring one perspective or point of view over others, leading to an unfair representation of historical events.
Lack of primary sources: This term describes a situation where there are few or no original documents or artifacts available for historians to study, making it difficult to gather accurate information about the past.
Incomplete records: This term refers to gaps in historical records caused by destruction, loss, or intentional manipulation. It can hinder historians' ability to reconstruct the full story of a specific time period.