A well-written code of conduct clarifies an organization's mission, values and principles, linking them with standards of professional conduct. ... It can also serve as a valuable reference, helping employees locate relevant documents, services and other resources related to ethics within the organization.
At Versailles, the French wanted for Germany to be divided into separate states - b, which would effectively lower the probability of Germany ever again becoming so strong and causing such damage to the European continent ever again. Sadly this wasn't the case with the treaty of Versailles.
B) spread of communist ideas :)