{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This interactive visualization displays a hierarchical tree of world countries, organized by continent and subregion. Using the D3.js library (v5), it renders a static radial tree layout using SVG elements. The code appends circles for each node and links to connect parents to children, with node sizes derived from a custom radius attribute. A zooming feature is enabled via the `zoom` event, allowing users to pan and scale the entire viewport. The data is structured as a nested JSON object with \"World\" as the root, containing continents, subregions, and individual country names as leaf nodes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e5b963cfdfde45c5acfe02ca40ebde3e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}