When did the practice of the handshake begin?

The origin of the handshake goes back to primitive eras: the physical contact of the hand symbolized peace and friendship. Later symbolism of the gesture, apart from a greeting, was the ratification of a contract or pledge. Even today, we clinch a contract or business deal by 'shaking hands on it'. Archaeological ruins and texts show the handshake was in use as a means of greeting as far back as the 2nd century BC.

Origin of the handshake, Primitive eras, Physical contact of the hand, Peace and friendship, Symbolism of gesture, Greeting, Contract or pledge, Shaking hands on it, Archaeological ruins, 2nd century BC