This pie chart visualizes the distribution of iris flower species from a remote CSV dataset, with each species represented as a colored slice and a matching legend. Built with D3 v6, the example uses the `pie` generator, `arc` generator, `scaleOrdinal`, and `schemeCategory10` to create the chart, while `svg` selections handle rendering. The code also demonstrates a reusable `pieChart` module with chained getter-setter methods, and the legend is drawn manually using appended `g` elements with rectangles and text labels, all styled with custom CSS.