But isn't linux US tech? The blueprint, UNIX was a US project, torvolds works from the US. the original userland GNU was a US based project. The new userland systemd is a US based project.
If you want to discuss it on that level, it if Finnish tech imported to the USA, inspired by a Dutch implementation of a research OS.
On a more serious note, Linux has been developed by many individuals all over the world, you can't put a nationality stamp on it.
Linux Mint (the distro I use) was started and is led by French developer Clement Lefebvre.
QEMU and FFmpeg are among the notable projects started by French developer Fabrice Bellard.
VLC was started by students of École Centrale Paris.
These are just the things that I know about as an American, so I'm sure there are more.