This pie chart shows the top 10 countries by deaths attributed to air pollution in 2020, with each slice labeled with its death count in thousands and a corresponding color-coded legend. The visualization uses D3 v5 APIs including `d3.pie`, `d3.arc`, `d3.scaleOrdinal`, and `d3.csv` to load and process the data from a GitHub gist. SVG rendering places the chart at center with an outer radius of 175 pixels, while text labels and legend entries are added manually via D3 selections.