title: Unlike other major JS frameworks such as Angular, why does ReactJS need so many external tools to build an app?
body: <p>I've been coding React for the last couple of months now. I thought, initially, just going through the React official docs would be sufficient. But I've had to learn some other tools in order to really make my apps useful/easier to developer. For example, tools like Redux and react-router. How come these tools don't already come with React officially? What's the true purpose of React vs other JS frameworks?</p>