This project will show you how to use React, Redux, Firebase, Typescript, and Material Design to create a basic to-do list app, that is basic, but real-world. To learn more about it, please read this tutorial here https://developerlife.com/2016/10/07/getting-started-with-react-redux-and-firebase/
The Internet Engineering Task Force (IETF) points out that "Master-slave is an oppressive metaphor that will and should never become fully detached from history" as well as "In addition to being inappropriate and arcane, the master-slave metaphor is both technically and historically inaccurate." There's lots of more accurate options depending on context and it costs me nothing to change my vocabulary, especially if it is one less little speed bump to getting a new person excited about tech.
You might say, "I'm all for not using master in master-slave technical relationships, but this is clearly an instance of master-copy, not master-slave" but that may not be the case. Turns out the original usage of master in Git very likely came from another version control system (BitKeeper) that explicitly had a notion of slave branches.