Final answer:
History is categorized into periods based on diverse sources like written texts and material culture, but interpreting history can be challenging due to subjectivity and ambiguities.
Explanation:
History is classified into different periods to provide structure and organization to the vast amount of human experience. Historians rely on a variety of sources such as written texts, material culture, and archaeological findings to reconstruct narratives about the past. However, the subjectivity of historical interpretations, limited sources, and ambiguities in historical materials can lead to challenges in accurately depicting the past.
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