We will now create the React Application. This will include the following components:
# Create the initial app
npx create-react-app andy-pizza-shop
# Change to the root directory for the application
cd andy-pizza-shop
# Install Amplify, Amplify React, and Amplify React UI
npm install aws-amplify @aws-amplify/ui-react
# Install React-Bootstrap
npm install --save bootstrap reactstrap react-bootstrap
You may receive warning messages during this step - no need to worry - that is expected.
To ensure the newly created application works in our environment, run the following:
# Run npm start
npm start
After this, verify that the development server started successfully with this message:

In the Cloud9 environment, choose Preview Running Application from the Preview menu:

This will load a browser window within Cloud9. Ensure the default application is working correctly:

Going forward, you will probably want to launch the preview window in a separate browser window. Click the button in the top right to do this: 
Assuming that is working, we can move on to the next step.