Why do the historian divide the past into different ages?

Historians divide the past into different ages to create a clearer framework for understanding and analyzing complex historical developments. These divisions, such as the Stone Age, Middle Ages, or Modern Era, help categorize significant social, political, economic, and cultural changes over time. By organizing history into distinct periods, historians can more easily identify patterns, influences, and transitions that shaped human civilization. This categorization also aids in teaching and communicating historical narratives effectively.