This pie chart visualizes the top 10 countries by deaths from air pollution in 2020, with each slice labeled with its death count in thousands and a corresponding legend listing country names and values. The visualization uses d3.csv to load data from a GitHub gist, then applies d3.pie, d3.arc, and d3.scaleOrdinal with hardcoded colors to generate the SVG paths and text labels. Legends are manually positioned within the SVG using d3 selectors and attribute transforms, while d3.format formats the numeric labels.