The Treaty of Versailles was the most important of the peace treaties that brought World War I to an end. The Treaty ended the state of war between Germany and the Allied Powers. It was signed on June 28 1919 in Versailles, five years after the assassination of Archduke Franz Ferdinand
Professor plum is showing the detached style of listening. This type of listener are intellectually not present in a conversation although they are present physically. In the situation described clearly the professor was not listening to what Roberto was saying.
