{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization presents a hierarchical tree of world countries, organized by continent and subregion, with text labels sized inversely to their depth in the hierarchy. The D3.js code loads data from a JSON file, uses the `tree` layout and `linkHorizontal` path generator to position nodes and draw curved links, and renders the result as SVG. Pan and zoom interactions are enabled through D3’s `zoom` behavior, while the root view adapts to the browser window dimensions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/681bc67298864a57a1c56e25ef1fa907?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}