{"version":"1.0","type":"rich","title":"World Countries Tree","description":"A collapsible tree map displays the hierarchical structure of world countries, grouped by continent and subregion, using data from a JSON file. Each node is labeled with its geographic region name, with font size decreasing at deeper levels. The visualization is built with D3 v5, using `tree()` and `hierarchy()` layouts, rendered as an SVG with `linkHorizontal` paths. Pan and zoom functionality is implemented via `d3.zoom()`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a2a585de52454fac9c93bfe9f5683106?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}