This example demonstrates a node-link diagram representing social connections among 16 tribal groups, with 58 edges showing positive or negative relationships. A D3 force-directed layout positions the nodes using `d3.forceSimulation` with link, charge, and centering forces. Circles are rendered as SVG elements with dark blue fill and partial opacity, while lines represent connections. The data is loaded from a CSV file, and hover interactions trigger tooltip visibility. The code uses D3 v7 and includes the d3-legend and d3-scale-chromatic libraries, with the simulation updating node and link positions on each tick.