reactjs - Flux scope in a React application

I have been working on React components for a while and yesterday just did my first Flux example from https://github.com/tildedave/flux-feature-flags

Just wondering the scope of Flux. In Flux we have Stores, Dispatchers etc, are they available just for one React component, each React component has it's own Flux structure?

Or they are available globally? so the whole application shares Stores, Dispatchers etc, making them available to all React components used in this app