{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization shows the hierarchical structure of world countries organized by continent and subregion. The tree layout displays the geographic classification hierarchy, with the root node \"World\" branching into continents like Asia, then into regional groupings such as Southern Asia, and finally into individual countries. The code uses d3.json to load the data, d3.hierarchy to construct the tree structure, and d3.tree with linkHorizontal to render the SVG paths connecting parent and child nodes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b2719b44e2044b92b079798d32d2e910?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}