This example demonstrates a minimal React application that uses D3 utilities to load data and manage it through React state. The program fetches a CSV dataset and parses it with D3’s parsing functions, while the `useState` hook tracks the loaded data. The code imports React and ReactDOM, renders an `App` component into a root div, and leaves room for visualization logic. The design uses D3’s data-loading APIs alongside React’s component model, though the current version only sets up the data-loading scaffold without yet drawing any marks.