{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This interactive visualization displays a hierarchical tree of world countries organized by continent and subregion, rendered as an SVG node-link diagram. The tree layout uses `d3.tree()` and `d3.hierarchy()` to position nodes, while `d3.linkHorizontal()` generates curved links between parent and child nodes. Panning and zooming are enabled through `d3.zoom()`. Data comes from a local JSON file. Text labels show country names, with font size decreasing by depth and a Playfair Display font applied via CSS.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9f59c314f72745b69a727891aa7dae38?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}