{"version":"1.0","type":"rich","title":"World Countries Tree","description":"A hierarchical tree visualization displays the world's countries organized by continent and subregion using a JSON dataset. The layout uses the `d3.tree` API to compute node positions across the full SVG canvas, with a rounded background rectangle. D3 v5 handles data loading via `json` and selection/appending of SVG elements. The interactive structure is static, showing only the initial tree layout without zoom or collapse functionality.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6c38ddd3c6794459bfdbc5dba828b220?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}