{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization shows the hierarchical organization of world countries by continent and region, displayed as a horizontal tree layout. The tree is built from a JSON data file that groups countries into subregions like Southern Asia and Western Asia, with all labels rendered in the Playfair Display typeface. It uses D3 v5’s `tree`, `hierarchy`, and `linkHorizontal` generators to compute the layout and draw curved links, while the `zoom` behavior enables panning and scaling of the entire SVG viewport. Text size decreases with each level of depth.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/52d5721b70584cb59da197bcc364d756?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}