meatpacking
the government
they have contributed by helping the US grow
Innovations in the computer industry contributed greatly to the economic boom of the 1990's.
Upton Sinclair wrote the novel "The Jungle," which exposed the harsh conditions in Chicago's meatpacking industry and contributed to the passage of the Pure Food and Drug Act.
beef
They traded and fought to help industry grow.
Industry did not grow in the south colonies, because of the slave code.
Chicago
Coal and iron.
he has contributed greaty to the development of the poultry industry
the mining industry
the mineing industry!