{"version":"1.0","type":"rich","title":"World countries tree","description":"This visualization shows a hierarchical tree of world countries, organized by continent and subregion. The layout uses the D3 `tree()` function on hierarchical JSON data, positioning leaf nodes like Afghanistan and India under regional groupings such as Southern Asia. SVG paths connect parent-child relationships, rendered with a yellow-to-teal linear gradient. Text labels display each country’s name, with font size decreasing by depth. The view supports zooming and panning through the D3 `zoom()` behavior on the SVG container.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/6a7f3ec474544e7cb35ba257b6b00b1b?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}