The World Tree visualization displays a hierarchical dataset of global regions and countries as a radial tree diagram. It uses D3’s `tree` layout and `hierarchy` function to compute node positions, with SVG `path` elements representing the links between parent and child nodes. The interactive chart is built with D3 v5 within a React framework, using `json()` to load the data and `select()` to manage the SVG canvas. Text labels are styled with a serif font and white text shadow for readability.