Bystander effect: The bystander effect is also referred to as bystander apathy.
In social psychology, the term bystander effect is defined as any situation in which a person does not help the victim in an emergency if anyone else is present there at the given moment.
In the bystander effect, the number of people is directly proportional to the act of helping a victim in a given situation.
In the question above, the given statement describes the bystander effect.
The North American Free Trade Agreement was formed in december of 1992 and came into force the 1rst of 1994. It includes Canada, the USA and México; hence creating the unilateral trade in North America, eliminating tariffs and non-tariffs barriers between themselves.