React is a library, plain and simple. It has literally no opinions on even basic stuff like routing, or how to manage application data. It takes your data as

React is a library, plain and simple. It has literally no opinions on even basic stuff like routing, or how to manage application data. It takes your data as an input and by some mechanism lays out a visual representation of it defined by your components render methods, being sure to update the visual representation as the data changes. The rest are implementation details.