{"version":"1.0","type":"rich","title":"World Countries Tree","description":"A hierarchical tree diagram shows the geographic organization of world countries, grouped by continent and subregion, with the root labeled \"World\" and leaves naming individual nations. The layout uses a horizontal tree where text size decreases with depth, and zoom and pan are enabled via the d3.zoom API. The code loads a JSON hierarchy with d3.json, applies d3.tree and d3.hierarchy for layout, and renders SVG paths and text with d3.linkHorizontal. Labels use Playfair Display font with white text shadows for readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c5875824247849c286650de90c011722?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}