title: Go back to the App component without react routing
body: <p>I have the  component that displays one button. Clicking this button loads the  component which has a back button. I now want to return back to the  component when this back button is clicked.  </p>
  
  <p>I am new to react and if I search online I see react-routing as the solution. Wouldn't simply rendering the  component from  component work? Just like  was rendered from ?</p>