decline of trade on the silk road
Very. thanks to it, America is independent today instead of being part of England. It formed the bill of rights and all the rights Americans have today. So yeah, it is pretty relevant.
I think it should be thick and it should be aluminum because aluminum is a good conductor... and i don't think it matters if its above ground or underground.. because if u look outside now most of the wires are above ground but they are starting to make them underground now.. so if u have to pick one just say above ground