This visualization presents a pie chart of countries by income, sourced from a CSV file fetched via D3’s `csv` method. Each slice’s color is mapped using `scaleOrdinal`, while `d3.arc` and `d3.pie` generate the segment paths and text labels positioned via the arc centroid. A legend on the right lists each country with its income value, formatted using D3’s `format` function. The chart renders in SVG with a title, using D3 v5.