This network visualization shows countries as labeled nodes, grouped and colored by continent, with links connecting countries that share a continent. The layout uses a force-directed simulation (`d3.forceSimulation` with `d3.forceLink`, `d3.forceManyBody`, and `d3.forceCenter`) to position nodes, which can be dragged via `d3.drag`. Data comes from a CSV file, rendered as SVG circles and text, with continent colors from the `d3.schemeSet2` ordinal scale.