This example demonstrates how to load CSV data with D3 and manage it with React state, displaying a text summary of the dataset instead of a visualization. The app fetches a CSV containing CSS named colors from a GitHub gist using d3.csv, stores the parsed result in React state via useEffect, and renders a message showing the data size, row count, and column count. D3 v6 and React 16.9 work together, with the message calculated using d3.csvFormat on the loaded data.