This example demonstrates how to combine React with D3 to load and display CSV data. Using the `useState` and `useEffect` hooks, it fetches a CSS named colors dataset from a GitHub gist via `d3.csv` and presents a summary message showing file size in kilobytes, row count, and column count. The visualization updates from "loading" to the data summary once the asynchronous request completes, with React handling the UI state and D3 performing the data parsing. The code uses React 16.9 and D3 v6.