metal and rubber
sometimes iron, titanium, aluminum, steel, carbonfiber, leather, foam, rubber!!
norco bikes made in Canada
probably in taiwan where most bikes are made
Shozo Kawasaki made dirt bikes.
The Ideal Bikes Factory is made in Patra,Greece
Wood
1860
wood
Made in China.
They are made of metal.
BMX started in the USA, so the first bikes were built there.
You can scroll the internet for American made recumbent bikes. One such company is Linear.