This example shows a sales hierarchy tree with a root node for Global Sales, branching into country-level nodes (United States and United Kingdom), sales representatives, and individual products. The visualization uses D3.js v7 with the `d3.tree()` layout and `d3.hierarchy()` to compute node positions, then renders the structure as an SVG using `linkHorizontal()` for the connecting paths and colored circle nodes representing depth levels. Labels are positioned to the left for parent nodes and to the right for leaf nodes, with the data structure hardcoded in JavaScript.