{"version":"1.0","type":"rich","title":"World countries tree","description":"This interactive D3.js visualization presents a hierarchical tree of the world's countries, organized by continent and subregion. The data is loaded from a static JSON file using D3's `json()` method, and the interface is built with an SVG canvas and a custom `select` helper. The visualization uses a class-based approach with ES6 modules, displaying country names as nodes in a nested structure.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/cac583ebcfa14c8c914cdc5db9f2feea?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}