It’s easy to divide fantasy cultures with bright lines & borders, but nation-states & imperial identities aren’t the only cultural paradigm.
Worldbuilding is the process of constructing an imaginary world, sometimes associated with a whole fictional universe. Developing an imaginary setting with coherent qualities such as a history, geography, and ecology is a key task for many science fiction or fantasy writers. Worldbuilding often involves the creation of maps, a backstory, and people for the world. Constructed worlds can enrich the backstory and history of fictional works.
Food storage methods are indicative of sociopolitical system. Also: ancient governments fed people in need during times of economic crisis.
Religious institutions throughout history have served functional purposes. Priests heal, advise, judge, keep records, and perform important functions for the redistribution of wealth. It’s not all myths & silly rituals.
History contains thousands of years of inspiration for creating systems for sending in fiction, from Persian couriers to African drums.