Final answer:
In Freud's psychoanalytic theory, the superego must be subordinated to societal constraints which allows the ego to function effectively, contributing to societal harmony. This suppression of individual desires contributes to the ideologies and hegemonies that enforce social cohesion.
Step-by-step explanation:
The gap in the sentence relates to the psychological constructs of the id, ego, and superego, which are central to Freud's psychoanalytic theory. According to Freud, the superego must be subordinated to the external societal constraints, to maintain social order, so that another aspect of the psyche, presumably the ego, can emerge triumphant. This is consistent with the views that enforce the necessity of suppressing certain desires for the greater good of societal harmony. The text further implies that society's dominant ideas help to form a collective consciousness, or hegemony, which enables these processes.
Additionally, the relationship between culture and society is highlighted by the fact that cultural dynamics, such as the creation of ideologies and hegemonies, contribute to social cohesion and the legitimization of the social order. This relationship underscores the importance of understanding how societies hold together, a central commitment in studying social sciences.