{"version":"1.0","type":"rich","title":"Fork of  World Countries Tree","description":"This visualization shows the hierarchical organization of world countries, grouped first by continent and then by subregion, using a horizontal tree layout. The code employs D3 v5’s `tree()` and `hierarchy()` functions to compute node positions, then renders the connecting links with `linkHorizontal()` as SVG paths. The data is loaded asynchronously from a local JSON file via `d3.json`. The resulting chart displays countries as leaf nodes without labels, emphasizing the structural branching pattern of the geographic taxonomy.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e45e0eb318f74e839d45d05f11387b8a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}