{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization displays the hierarchical structure of world countries organized by continent and subregion, rendered as a horizontal tree layout. The code uses D3’s `tree()` layout with `linkHorizontal` for curved links, and applies `zoom()` for panning and scaling. Text labels scale in font size based on depth, with the root at the top. The data comes from a static JSON file with nested nodes representing regions and countries.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/ee7d39733eeb41158eda81af374e1684?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}