This visualization shows the top 10 countries by deaths from air pollution in 2020, displayed as a pie chart with each segment labeled in thousands and accompanied by a color-coded legend. The chart uses D3 v5’s `pie` and `arc` functions to generate the segments, with `scaleOrdinal` assigning colors from a hardcoded array. Data is fetched via `d3.csv` from a GitHub gist, and SVG elements are created using `select`, `append`, and `attr`. Text labels are positioned using `arcGenerator.centroid`, and legends are rendered as grouped rectangles and text elements.