Answer:
The Vienna Convention on Diplomatic Relations of 1961
I'm thinking chocolate since I'm pretty sure lots of people rationed sugar during WWII. I don't think they would have rationed weapons, automobiles or water. Hope that helps.
Each individual has a unique opportunity to use his or her capital in order to improve the standard of living of the general public. This is done by making sure that the industry that he or she works in is of the best quality.