Why do people wear suits?

What dose the idiom bury the hatchet mean? Where did the term 'getting on your nerves' originate? What is the other word for unsophisticated behavior? What is the opposite word of manners? Was it a custom to roll a napkin to indicate one would come back to a meal? How do you say thanks for saying congratulations? What country uses the greeting namaste? What is proper etiquette for bringing a spouse to a business dinner? Never send to know for whom the bell tolls it tolls for thee? Name something that people wish was fair but it often isn't? How do say nevermind in french? What is a backhanded question? Does a dark brown shirt match brown pants? What do we say for thank you in Chinese? How to Address envelope when husband and wife are both doctors? What does the idiom by all means mean? What is the difference between a human being and a person? How can you kindly remind people when they are being arrogant? What is the adverb for 'scorn'? Is it ok to ask how much money someone makes?