{"version":"1.0","type":"rich","title":"World Countries Tree","description":"The World Countries Tree visualizes the hierarchical structure of continents, regions, and countries using a horizontal dendrogram layout. It renders the data as SVG paths with curved links connecting parent nodes to their children. The implementation uses D3 v5 APIs including `d3.tree`, `d3.hierarchy`, and `d3.linkHorizontal` to compute the layout and generate the connecting paths, while styling employs the Playfair Display font and a teal stroke color against a clean background.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/bcc41ef96ab34e0e8fc8d0174fef6647?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}