Let's fire up our region application, and then open the web developer tools and pick the Redux tab. You'll get something like in the following screenshot:
Loading the application shows the initial state plus a couple of actions: the request for countries and the success of that request
There are many features here. The following slider (you will have to click the clock icon on the bottom bar to see it) is probably the most interesting one, because it lets you go back and forth; try sliding it, and you'll see how the application changes.
For example, you could easily see how the screen looked when the country request action ...
