This pie chart visualizes the top three countries by deaths from water pollution in 2020, displaying each country’s death count in thousands as a labeled arc segment. The chart uses D3 v5’s `pie`, `arc`, and `scaleOrdinal` to generate and color the proportional slices, with SVG text positioned via `arcGenerator.centroid`. A custom legend shows country names and death values, while the data is fetched as CSV from a GitHub gist and formatted using D3’s `format` function.