This example shows a pie chart where each slice represents a CSS named color, with the slice fill matching the color itself. The data, loaded from a remote CSV file using D3’s `csv` utility, is rendered entirely through React components. React’s `useState` and `useEffect` hooks manage the asynchronous loading of the color data, while D3’s `pie` and `arc` generators compute the slice angles and SVG path geometries. The chart is drawn as an SVG, centered on a canvas of 960 by 500 pixels, with React mapping each data row to a colored `<path>` element.