{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization presents a hierarchical tree of world countries organized by continent and subregion, loaded from a nested JSON data structure. The tree layout uses d3.tree and d3.hierarchy to position nodes, with curved links generated by d3.linkHorizontal. Text labels scale in size based on depth, and the entire diagram supports pan and zoom interactions via d3.zoom. The SVG rendering applies a custom color to paths and a white text shadow for legibility.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/01cd06b6166d4914bb1c18241c24b203?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}