I believe the answer is: the suggestibility of the individual who is to be hypnotized
Suggestibility in this context refers to the inclination of the person to accept the act of hypnosis that being done to that person. This would make them much more open to follow the instruction given during the hypnosis, which most likely lead to higher chance of success.
The League of Nations
Explanation:
The sentate did not want to join the league of nations
Slaves standing up and trying to fight for their freedom.
The answer is Closure.
Gestalt is a psychology term which means "unified whole". It refers to theories of visual perception developed by German psychologists in the 1920s.
There are several Gestalt principles and one is the principle of closure. In addition all the Gestalt principles apply to hearing just as well as they do to vision. Closure basically means that when there is something unfinished in what we can see or what we are hearing or experiencing our brain has the ability to automatically fills in gaps in the stimulus. It creates closure.