A pie chart displays the number of nuclear warheads per country, with each slice colored distinctly and a legend listing country names alongside their values. The visualization uses D3 v5’s `pie`, `arc`, and `scaleOrdinal` APIs to generate SVG paths, while data is loaded from a CSV gist via `d3.csv`. Slices are rendered without gaps, and the chart is centered within an SVG of 960 by 500 pixels, with legend text styled via CSS.