So i have bit of experience with React JS. I know that it is used to create single page application . Which means that there are no page reloading or page loading when navigating throughout the application.

1. At build time all of the entire application is stored in a single file.
2. The JS bundle/codes are executed on client side while the client interacts with wepApp.

Now , i have just started learning Next JS. Which i have heard to be a framework built on top of React JS . So my first thought was "Ok so this also generates Single page applications". But as i have started to go through some practice , i noticed that the pages are refreshing and there are more than one .html files after the build. So my Questions are:

1. Does Next JS by default(without any additional config) generate SPAs?
2. If Next JS is not SPA framework then why are people saying next js is a react based ?framework ?