https://en.m.wikipedia.org/wiki/Armour_and_Company

Armour & Company was an American company and was one of the five leading firms in the meat packing industry. It was founded in Chicago, in 1867, by the Armour brothers led by Philip Danforth Armour. By 1880, the company had become Chicago's most important business and had helped make Chicago and its Union Stock Yards the center of America's meatpacking industry. During the same period, its facility in Omaha, Nebraska, boomed, making the city's meatpacking industry the largest in the nation by 1959. In connection with its meatpacking operations, the company also ventured into pharmaceuticals (Armour Pharmaceuticals) and soap manufacturing, introducing Dial soap in 1948.

https://en.m.wikipedia.org/wiki/Union_Stock_Yards

https://en.m.wikipedia.org/wiki/Vanderbilt_family

https://en.m.wikipedia.org/wiki/Chicago_(poem)

The Union Stockyards operated in the New City community area for 106 years,[2] helping Chicago become known as the "hog butcher for the world," the center of the American meatpacking industry for decades.

https://en.m.wikipedia.org/wiki/Animal%E2%80%93industrial_complex

https://en.m.wikipedia.org/wiki/Cornelius_Vanderbilt