{"version":"1.0","type":"rich","title":"World Countries Tree","description":"The World Countries Tree visualizes the hierarchical relationships between continents, subregions, and countries in a radial layout, with leaf nodes representing individual nations. It uses a D3 cluster layout to compute the tree structure and project nodes into polar coordinates via the `project` function, rendering SVG paths for links and text labels for each country. The visualization supports zooming and panning through D3's zoom behavior, applies a square-root font scale based on tree depth, and loads its data from a JSON file, with styling using the Playfair Display font.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2ddfc2f659b44f0abd3621a22936b090?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}