The actual beginning of the handshake is as difficult to specifically determine as most events that happened before written history. However, there are many accounts that provide both comedy and insight. One origin offered by Herbert Spencer, in his book THE PRINCIPLES OF SOCIOLOGY, is that of two Arabs meting in a desert. They each reach for the others hand to kiss it in greeting. However, it is an insult to have your hand kissed by another individual, so both men try to withdraw from the lips of the other man. The end result of this meeting is the acceptance by both men that they wouldnt kiss the others hand, and thus they ended up only clasping the hand of the other, and the handshake was born. The mutual acceptance by the two men that the hands wouldnt be kissed shows the equality between the two individuals; however, that aspect will be discussed a little further down the page.
Perhaps a more practical origin of the handshake comes from medieval Europe, where kings and knights would extend their hands to each other, and [grasp the] others hand as a demonstration that each did not possess concealed weapons and intended no harm to the other (Hall). I say this is a more practical origin of the handshake, because it more closely resembles our current use of the handshake as a way to introduce ourselves to a person and open ourselves up to them for the purpose of interacting. Interestingly enough, the ancient Greeks used it similarly. It was a welcoming sign of friendliness, hospitality, and trust (Schriffin).