This world map visualizes the medal counts of participating countries in the Winter Olympics, using a natural Earth projection. It shades each country according to the total gold, silver, and bronze medals won, with a sequential color scale (interpolateOrRd) applied to the aggregated medal data. The visualization fetches geographic boundaries from a TopoJSON world atlas and merges them with Olympic medal statistics from a CSV file, normalizing country names to align historical teams like the Soviet Union and East Germany with modern counterparts. The code uses d3’s geoPath for rendering, d3.csvParse for data parsing, and topojson-client for converting TopoJSON to GeoJSON features.