This network graph visualizes a friendship network of ten footballers, including Haaland, Messi, and Ronaldo, using force-directed layout. The visualization loads data from `data.json` and applies `d3.forceSimulation` with `forceLink`, `forceManyBody`, `forceCollide`, and `forceCenter` to position nodes. Rendered as SVG, nodes appear as large green circles with labels, and links use arrowheads defined in SVG `defs`. Users can drag nodes interactively via D3’s drag behavior, which updates node positions in real-time.