Your still talking bespoke production and one off methods. Large Empire =/= Large Empire w/Mass Manufacturing. If your going to compare the bronze age with the

Your still talking bespoke production and one off methods. Large Empire =/= Large Empire w/Mass Manufacturing. If your going to compare the bronze age with the world post industrial revolution I just don't know what else I can tell you. Manufacturing in the two eras is completely unrelated. You are cherrypicking the best way to support some argument that heavy industry does not need heavy transport.