I am not completely sure but would it be answer number 4? Sorry if I am wrong, it just makes more since to me.
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
If i am correct, I think it is the Aztecs
A. Greece
because they where the first that we know of to hold the Olympics
