wood and steel
steel
It was made of steel.
Telephone lines are made of iron or steel. Between the iron or steel core and the pipe is an insulating material. All Telephone lines are made and work this way.
Inventing the telephone.
He invented the telephone.
The telephone was invented by him.
Alexander graham bells first telephone is in the national museum of American history in Washington D.C.
copper
invinted the telephone
Great
He invented the telephone and when he was a kid he invented the wheat husker.
ummm the telephone...