In many countries,starting a business to visit a few greeting customs.However,observed the custom in the United States is unpopular.Americans rarely in business exchanges courtesy,they will not be easily relaxed environment to do business,it will not improve by playing golf to trust each other.They generally work rather than through the social approach to assess and understand others,it is because Americans feel life is short.They deeply understand that time gone.Therefore,they will be carefully planning time,try to make every minute spent meaningfully.