{"version":"1.0","type":"rich","title":"World Countries Tree","description":"This visualization displays the hierarchical structure of world countries, organized by continent and subregion. The data is presented as a horizontal tree layout with curved link paths connecting parent nodes to their children. Built with D3 v5, the code uses `d3.tree` and `d3.hierarchy` to compute the layout, `d3.linkHorizontal` for the paths, and `d3.zoom` for panning and scaling. Country names are rendered as text labels with sizes that decrease at deeper hierarchy levels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/5f418da10a7a46b9a205663006076ad7?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}