This example demonstrates a minimal React application that renders the text “Hello React” onto a web page. The code imports React and ReactDOM, defines an `App` component that returns a simple `div` element, and mounts it to the `#root` element in the HTML document. It uses the `ReactDOM.render` method to display the component, with the page loading React and ReactDOM from unpkg CDN scripts. The example serves as a basic starter template for building interactive visualizations with the React framework.