{"version":"1.0","type":"rich","title":"World Countries Hierarchy","description":"This visualization displays the hierarchical relationships between world regions, subregions, and countries using a horizontal tree layout. The data is structured as a nested JSON hierarchy, with nodes representing continents, regions, and individual nations. The code uses D3 v7’s `tree()` layout and `linkHorizontal()` generator to position and draw the connecting paths, while node labels are rendered as SVG text elements with sizes scaled by node depth. A zoom behavior is applied to the SVG container for panning and scaling.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/336286a240564e0989e540f796723c2e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}