{"version":"1.0","type":"rich","title":"World Countries Tree","description":"A hierarchical tree diagram displays the world's countries organized by continent and subregion, with each country as a leaf node. The visualization uses d3.tree and d3.hierarchy to compute the layout, then renders horizontal links between nodes as SVG paths via d3.linkHorizontal. Data is loaded asynchronously from a JSON file using d3.json, and the SVG canvas is sized to fill the browser viewport. The chart emphasizes the geographic grouping of nations without displaying node labels or additional interaction.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/be38d8c6f55a460caa1f54336e9e4b0c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}