Certain themes apply to civilizations separated by thousands of miles and hundreds of years because humans tend to live with similar issues and circumstances that made them make decisions conducive to solving problems, although many different ways of thinking oppose a single way to resolve things.
Communities and nations also have had to establish contact and trade relations with other cultures. Some by will others by force, war, or conquest. All these factors allowed the exchange of culture, values, and traditions between different nations that were carried along for many years. That is why they are still present in different, times, eras, and places of the world.