This example demonstrates how to load CSV data with D3 and manage it using React state. The app fetches a dataset of CSS named colors from a GitHub gist via `d3.csv`, stores it in React's `useState`, and renders a summary message with `d3.csvFormat` displaying file size, row count, and column count. While the data loads, it displays "Loading...". The integration uses React hooks (`useEffect`, `useState`) alongside D3 v6 utilities.