{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This interactive visualization presents the hierarchical structure of world countries, organized by continent and subregion. Using a tidy tree layout, the SVG renders country names as text nodes connected by green paths, with the root labeled “World.” The visualization employs D3.js v5 with the `tree()`, `hierarchy()`, and `linkHorizontal()` APIs to compute and draw the layout. Users can zoom and pan the entire view via the `zoom()` interaction, while the font size scales with tree depth. The data comes from a structured JSON file representing geographic groupings.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/239ef8637bfc43f78bc8ebbeb9156235?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}