For any country that's existed throughout history their sociological makeup is limited to the ethnicity of its location. That is, any country except the United States of America. When the settlers arrived they took the Native Americans and closed them out from the society they desired to create. In order for America to populate and prosper they needed immigrants. Every city had its lure that brought in immigrants created their ethnic makeup during the large migration to the country at the turn of the 20th century. In Chicago, the meat packing companies were committed to attaining the highest profit margin attainable. For Chicago, it was this industry's system to maximize profits, as illustrated in Upton Sinclair's The Jungle, that attracted workers from all over western Europe creating what is now considered an ethnic melting pot.
The most intriguing aspect of the meat packing industry in Chicago was the fact that the companies were able to give minimal salaries and still have a surplus workers to choose from. They did this without having to deal with labor unions for many years. This was possible because of the strategy they used to have employees be fully dependent on them. In an interview a man asked a manager of one of the leading meat packing companies, "How comes it you are only employing Swedes?". The man responded, "Last week we employed Slovaks. We change among different nationalities and languages. It prevents them from getting together. We have the thing systemized." This way by the time a nationality had figured out that they were being taken advantage of, the companies had already recruited from a different country. Due to the fact that such a large amount of people emigrated from the country they recruited from, there were many more people than there were jobs. In return, the nationality that currently held jobs were unable to strike in fear of losing their jobs to the new arrivals just coming into town looking for jobs.
