This example displays a minimal React application that renders the text "Hello React" on a blank page. The code imports React and ReactDOM, defines a simple functional component called `App`, and mounts it to the root DOM element using `ReactDOM.render`. It loads React and ReactDOM from external UMD builds via a CDN in the HTML file, while the JavaScript logic is bundled separately as `bundle.js`. No data or interaction is involved; it serves as a bare-bones starting point for integrating React with a visualization library.