Перевидите текст hundreds of years ago, soldiers began this custom.they shook hands to show that they did not have any weapons in their hands. now, shaking hands is a custom in most contries. in britain, you don,t shake hands with friends and family.but you shake hands when you meet a person for the first time. you also say: how do you do? this is not really a question it a formality.the correst answer is the same as the question how do you do?