Young Business Woman is Ready to Make a Deal.
While its origins remain obscure, archaeological ruins and ancient texts show that handshaking was practiced as far back as the 2nd century BC. A depiction of two soldiers apparently shaking hands can be found on part of a 5th century BC tomb on display in the Pergamon Museum, Berlin (their reference SK1708). Some researchers have suggested the handshake may have been introduced in the Western World by Sir Walter Raleigh in service with the British Court during the late 16th century. The handshake is thought by some to have originated as a gesture of peace by demonstrating that the hand holds no weapon.
The handshake is initiated when the two hands touch, immediately. It is commonly done upon meeting, greeting, parting, offering congratulations, expressing gratitude, or completing an agreement. In sports or other competitive activities, it is also done as a sign of good sportsmanship. Its purpose is to convey trust, balance, and equality.