Final answer:
Understanding the 18th and 19th centuries as times of social transitions is significant in explaining technological advancements, political revolutions, and cultural shifts.
Step-by-step explanation:
The significance of understanding the 18th and 19th centuries as times of social transitions is that it aids in understanding technological advancements, political revolutions, and cultural shifts. Technological advancements such as the Industrial Revolution brought significant changes to society, including improved transportation and production methods. Political revolutions, such as the American and French Revolutions, challenged traditional political structures and led to the establishment of new forms of governance. Additionally, the 18th and 19th centuries saw cultural shifts, with new ideas and philosophies emerging that shaped society and influenced art, literature, and scholarship.