The pankration was an old style of unarmed combat. The ancient Greeks introduced this sport into the Olympic Games in the 648 BC. Some public fights took place at the end of the 19th century. They represented different styles of fighting, including jujutsu, wrestling, Greco-Roman wrestling and others in competitions and challenges across Europe. After World War I, wrestling was born again in two main flows. The first flow was real competition; the second flow began to depend more on the choreography and on the grand public shows that resulted in professional wrestling. 