{"version":"1.0","type":"rich","title":"World Country Tree","description":"The World Country Tree visualizes a hierarchical classification of countries by continent and region using a horizontal tree layout. It renders nested links and labels based on the JSON data structure. The code uses D3.js APIs including `d3.tree`, `d3.hierarchy`, `linkHorizontal`, and `d3.zoom` to create an interactive SVG visualization that supports panning and zooming. Text sizes decrease with tree depth for readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/54eac0582ee94949ac4c9d011e03c09c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}