In one of my games USA suddenly has a huge industry score, over 1000 over mine. Occupying USA is out of the question because of a lack of navy, and the attrition my soldiers get from travelling over the atlantic + a amphibious invasion. So i wondering what other possibilities i had to either increase my industry score or to destroy USAs industry.
I can also not understand why USA has a higher score than me, as i have more factories, higher railroad level(80-100% all over, while usa has 50-30%), and I have all commercial and industry techs.
One tactic im wondering is to declear war on USA, let them mobilise and not mobilise myself. And then let them take the economic hit from mobilisation. The few stray troops they send over the atlantic i can destroy with my standing troops. Will this be enough to lower their industrial score?