On a technical level? Nothing directly. In fact, as time went on it seemed like Richard Stallman seems to really dislike Linux.
Some claim that Linux wouldn't exist without GNU, which was RMS' doing, but in all honesty Linux could still have easily existed without it. It's nnot like GCC was the only C compiler in existence in 1991.
The FSF has no actual role in Linux development any more than, say, the Xorg project does or the OpenSSH project does.
Linux is an open source software that has not had a detrimental affect on the marketing of proprietary software. Linux is computer operating system assembled under the model of free and open source software development and distribution.
Free Software Foundation's motto is 'Free Software, Free Society'.
Free Software Foundation's motto is 'Free Software, Free Society'.
Free Software Foundation was created in 1985.
Free Software Foundation Europe was created in 2001.
The budget of Free Software Foundation Europe is 250,000 euros.
Completely free. If someone sells you Linux, it is legitimate, however, it will not be for a license to use the software. The GPL is not that kind of license. However, it is still free as in freedom, not free as in beer, meaning it is entirely valid under the GPL to sell Linux.
There are a variety of different Linux software downloads available for download. One can download basic Linux for free from sites such as Download Linux Free and Softonic.
Not all version of Redhat Linux is free but you can download many desktop versions free.
The mission of the Free Software Foundation is to promote the rights of users to have access to free software in homes, schools and businesses. They are a non profit organization.
Linux is not illegal. Linux is a free, public license software modeled on Unix.
Linux is a stable operating system for using free office software such as LibreOffice. Many varieties of Linux already have LibreOffice installed by default.