{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization presents the hierarchical structure of world countries as a tree diagram. Using a JSON dataset, it organizes countries by continent and subregion, such as Asia and Southern Asia. The code builds the layout with D3's `tree` and `hierarchy` functions, then renders the connections as horizontal links using `linkHorizontal` and `select` from D3. The result is an SVG graphic, with black paths representing the parent-child relationships between geographic entities.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/eccd22302dff48fc8430de1b2b18139b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}