Agricultural has changed social classes. For, example, trash has affected the upper class because of the amount of it keeps increasing, this also increases the difference between the high and low class.
I think the Chinese were the most important and the Koreans were not as important.
In a working economy, it requires labor to attain natural resources to produce other resources. then once a city is built and currency is established, entrepreneurship is required to buy and sell goods. Lastly, capital is required to keep order in the population
