This pie chart visualizes the top 10 countries by deaths in 2020 due to air pollution, with each slice labeled in thousands and a corresponding legend. The code uses d3.pie and d3.arc to generate the chart, d3.scaleOrdinal to assign slice colors, and d3.format for tick labels. Data is loaded via d3.csv from a remote URL. The SVG rendering places the pie at (250,250) and the legend at (500,100), with text elements positioned via arc.centroid.