This example shows an interactive map of world countries rendered as SVG paths using the Natural Earth projection. Users can pan and zoom the map via d3.zoom, which applies a transform to the grouped map elements. The map loads GeoJSON data from the world-atlas TopoJSON file, converts it with topojson.feature, and draws each country using d3.geoPath. Countries fill light green and turn red on hover, with the surrounding sphere rendered in blue. The visualization demonstrates basic geographic mapping with interactive zooming and hover feedback.