{"version":"1.0","type":"rich","title":"World countries tree","description":"This visualization presents a hierarchical tree of world countries, organized by continent and subregion, using a tidy tree layout with horizontal links. The data is loaded from a JSON file and rendered as SVG, with text labels sized by depth level. It uses D3's `tree()`, `hierarchy()`, and `linkHorizontal()` APIs to position nodes and draw curved connecting paths, while a zoom behavior enables panning and scaling the entire graphic. The hand-drawn font and soft stroke color give the chart a casual, sketch-like appearance.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/c8756071ae2e4b8e8eb62c5fd91ee924?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}