Why do People Shake Hands?

Long ago it is thought that people shook hands when they met as a way of showing the other that they held no weapon and meant no harm. It evolved into a handshake being as good as a signature on a contract, meaning a man’s handshake was he bond, or word. It was also thought that a man with a strong handshake could be trusted and a man with a weak handshake was weak in character.