{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization displays a tree diagram of world countries nested by continent and region, with each leaf node labeled by country name. It uses the D3 v5 library, specifically `d3.tree` and `d3.hierarchy`, to compute the layout, and `d3.linkHorizontal` to generate the curved link paths. The SVG rendering is styled with teal strokes and serif font text, and includes zoom interaction via `d3.zoom`. Font size scales inversely with tree depth, making top-level regions larger. The example is built around two data files (`data_v1.json` and `data_v2.json`) that structure the hierarchical world geography.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/fff9d6ffc0c746659ac065cd4b1a0e59?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}