The Aryans are the ones who introduced the Caste System.
Trump was a real-estate developer and businessman who owned, managed, or licensed his name to several hotels, casinos, golf courses, resorts, and residential properties in the New York City area and around the world.
The people that had a nomadic lifestyle meant that they were able to communicate with people of multiple ethnicities, cultures, because they were traveling most of the time and were passing great distances, and they also needed a relatively short amount of time to get from one place to another. Because of this the nomads had knowledge of the technologies in multiple places, so they were the perfect people to spread the new invention. Because of their lifestyle they were also great for trading, and no wonder that the silk road was passing through nomadic lands and was mainly organized by the nomadic people. Unfortunately, besides the positives, there were also negatives in this, like transferring diseases in multiple regions very quickly, like the case with the plague/black death that had devastating effects on the demographics in Asia and Europe.
Answer:
Business cycles are a type of fluctuation found in the aggregate economic activity of nations… a cycle consists of expansions occurring at about the same time in many economic activities, followed by similarly general recessions… this sequence of changes is recurrent but not periodic."