Cuba and Brazil, your welcome :)
It was between the small states and big states. The small states wanted each states to have the same number of representation in Congress the big states wanted representation based on population .
Because it offers the historian an objective snapshot of the public sentiment of the time, which the cartoonist (should be) distilling for their readers, according to their feelings, for mass appeal. I say objective as it is usually very easy to decipher their subjective viewpoint according to the publication. The value of this is that it is tapping into how the masses 'feel' rather than how subjective facts can be built to form historical opinion. It becomes especially valuable prior to this century, when public sentiment is harder to garner as we were less technologically advanced.
Shell shock is basically PTSD and it was thought to be caused by soldiers being exposed to explodeing shells
