{"version":"1.0","type":"rich","title":"World Countries","description":"This visualization presents the hierarchical structure of world countries, organized by continent and subregion, as an interactive tree diagram. The D3.js v5 code loads a JSON dataset and uses the `tree` layout with `linkHorizontal` to draw curved connecting paths. Each country name appears as text, with font size decreasing at deeper levels. Users can pan and zoom the entire diagram via the `zoom` event handler, while SVG elements render the visualization with a custom Playfair Display font.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f4b949e5b22342d88efaaca2a348a856?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}