{"version":"1.0","type":"rich","title":"World Countries Tree-1","description":"A hierarchical tree visualization displays the world's countries organized by continent and subregion, using a tidy tree layout with horizontal links. The D3 v5 code loads hierarchical JSON data and applies the `d3.tree` layout, rendering the structure as an SVG with `linkHorizontal` paths and text labels. A zoom and pan feature is implemented via `d3.zoom`, allowing interactive navigation of the full country hierarchy.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/9ab071d674874c0c8bf37ff358d25dcf?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}