Why did George Lucas start with Star Wars episode IV?

His first movie was THX 1138. Circa 1970. I don't know how old he was.

You may be able to extrapolate given the aforementioned data.

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.