{"version":"1.0","type":"rich","title":"World countries tree","description":"This visualization shows the hierarchical structure of world countries, organized by continent and subregion, as a horizontal tree layout with curved links. The interactive view supports zooming and panning through D3’s zoom behavior. Built with D3 v5, it uses `d3.json` to load hierarchical data, `d3.hierarchy` and `d3.tree` for layout, and `linkHorizontal` for edge paths. Text labels are styled with the Permanent Marker font, and SVG rendering displays the full country hierarchy from the provided `data.json` source.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/ede55b191d144c9a86227e1288107f2f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}