Many companies worldwide make aircraft. Some are huge, like Boeing and Airbus and some are very small.
Airplanes.
make airplanes
To make airplanes.
Some airplanes are made in the US, but not all. there are several other countries int he World that can make airplanes too.
make and fix airplanes
Aluminium.
Make paper airplanes...
Companies that build airplanes
All airplanes are self propelled except gliders. You would make it like airplanes have been made from the beginning.
There are many tutorials on the internet that show you how to make origami planes. (Paper airplanes.) You can find them by searching 'Paper Airplanes' on Google.
I have managed to make quite a few in my time.
99.999% of Americans know how to make paper airplanes