The most correct answer here would be the growing of crops nad the taming of animals by early hmans. The Neolithic revolution is often seen as the transition from hunter-gatherer societies to societies of agricultural production and husbandry.
vice president andrew johnson
The economy is 3.4 trillion
History, for one. Communism is mostly attributed to Karl Marx, whom believed that workers are abused by the upper class. Communism is mainly the belief that one "takes as he needs" rather than own more than what is needed. This idea has failed in practice as Joseph Stalin abused the system.