Several distributions such as Fedora are shipping Gnome with Nautilus configured in spatial mode. This means that there’s no toolbar, no address bar and worst of all, each folder opens in a new window. A file manager in spatial mode is nothing more than a relic from the mid 90s that’s good only at cluttering people’s desktops with unnecessary windows. Nowadays, every major operating system provides browser-based file managers which opens folders in the same window, there are back and forward buttons and so on.
So, if you ever end-up using a Gnome-based distribution with Nautilus set in spatial mode, here’s where you have to go to set it in browser mode: