This pie chart visualizes the top 10 countries by deaths in 2020 due to air pollution. Each slice is labeled with the death count in thousands, and a legend on the right pairs each country with its corresponding color and value. The chart is built using D3.js v5, fetching CSV data from a GitHub gist. It employs D3’s `pie`, `arc`, `scaleOrdinal`, and `format` APIs to generate the SVG arcs, centroids, and formatted text labels.