React App
This example displays a minimal React interface with a text input, a submit button, and a copyright footer. It uses React state via `useState` to manage an input value and an array of submitted items, updating the list on button click. The code imports danfojs (as `dfd`) and Material-UI components, including `Typography`, `Link`, and `Container`, though the layout renders a static `Box` with text and a Material-UI footer. The app mounts through `ReactDOM.render` in `index.js`, referencing bundled scripts from React, ReactDOM, danfojs, and Material-UI.