{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization presents the hierarchical structure of world countries organized by continent and subregion, using a tree layout that branches from a central “World” node. Country names appear at varying font sizes based on their depth in the hierarchy, with linking paths connecting parent and child nodes. The implementation uses D3 v5’s `tree`, `hierarchy`, and `linkHorizontal` functions to compute the layout, while `zoom` enables interactive panning and scaling. Data is loaded from a JSON file, and the SVG rendering applies a custom Playfair Display font with white text shadows for readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4e7e0c09b5ac4804a47648a689c5bb62?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}