{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This interactive visualization presents a hierarchical tree of world countries organized by continent and subregion, rendered as a horizontal dendrogram using D3.js v5. The code loads hierarchical JSON data via `d3.json` and applies `d3.tree` layout with `d3.hierarchy` to position nodes, while `d3.linkHorizontal` generates curved paths for the connections. Text labels display country names with font sizes scaled by depth, and a `d3.zoom` behavior enables pan and zoom interactions. The SVG rendering uses a custom font and subtle text shadows to improve readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/706152caf5ca4aae992cc371f2d5891a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}