How is organizing history by theme different from organizing history by region?

Organizing history by theme focuses on specific topics or concepts, examining how they have evolved and impacted different regions over time. On the other hand, organizing history by region looks at events, people, and developments in a specific geographical area, showing how they have shaped that particular region's history. Theme-based history allows for a broader perspective across different regions, while region-based history provides a more detailed understanding of a specific area's historical context.