What was used as the semiconductor material in the production of early transistors?

If my memory serves me correctly it was 'Germanium'try this link:en.wikipedia.org/wiki/Germanium.

Germanium was the first material to use used to make semiconductors.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.