Answer:
A system of beliefs or ideas that justifies the social, moral, religious, political, or economic interests held by a group or by society is an ideology.
Step-by-step explanation:
An ideology is a set of ideas or beliefs that form the base that justifies an individual's or a society's behaviors, laws, practices, etc. Ideologies are fundamental to help shape society's own system and structure. As examples of ideologies we can list capitalism, socialism, Marxism, and liberalism, among others. Often, even individuals who choose to step away from common ideologies end up developing their own as a way to counter-balance the ones they are leaving behind.