{"version":"1.0","type":"rich","title":"World Countries Tree","description":"A hierarchical tree visualization displays the countries of the world, organized by continent and subregion, with each node labeled by name. The layout uses a tidy tree algorithm, rendering curved links between parent and child nodes via SVG paths. Implemented with D3 v5, the code employs `d3.hierarchy`, `d3.tree`, and `d3.linkHorizontal` to position nodes, while `d3.zoom` enables pan and zoom interactions. Text size scales inversely with depth, and the data comes from a static JSON file structured by geographic regions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f2d7a9dc734d4514826609fe0cc1905d?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}