Look at the website for the college you want to go to. If you want to do a level tech then you will need GCSE, same goes for Geog. A good grade means a lot, whatever subject it is in.
Your career choice seems not to favour either subject so choose what you enjoy as you will get a better grade. Geog is well looked upon.
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.