A pie chart displays the gross domestic product (GDP) of selected nations for 2019, with each slice labeled with its value in thousands and accompanied by a legend listing country names and corresponding GDP figures. The visualization loads CSV data from a remote GitHub URL and renders SVG output using D3 v5, employing `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` to generate the slices and color mapping. Text labels are positioned via arc centroids, while the legend is manually constructed with appended rectangles and text elements.