Was Vietnam War for being able to grow Opium in Indochina?

No. There was only one: slavery. Southern states started the war because they feared that Lincoln would free their slaves.

Lincoln did not in fact have that power while there was no rebellion.

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.