A pie chart displays the top 10 countries by population in 2019, with each slice sized by the country's population value from the linked CSV file. The chart uses D3.js v6 to load the data, compute the pie layout, and render SVG paths for the arcs. Slices are colored with a categorical scale, labeled directly on the chart, and accompanied by an interactive legend. Hovering over an arc increases its fill opacity, and drop shadows highlight each segment.