This pie chart displays the top 10 countries by air pollution-related deaths in 2020, using a dataset fetched from a GitHub gist. Each slice is labeled with the number of visitors, and a legend lists the countries with corresponding color swatches. Built with D3.js v5, the visualization uses `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` for color mapping, rendering paths and text into an SVG canvas. Data is loaded asynchronously via `d3.csv`, and the chart is positioned at the center of the 960×500 viewport.