In less than 10 years, South Omaha had developed as a regional stockyards and meatpacking center. As its industrial jobs did not require high-level language skills, it drew thousands of immigrant workers, mostly from eastern and southern Europe. This area of the city showed ethnic succession, as different waves of immigrants established certain territories as their own during their first settlement. Some descendants moved out of the area into other parts of the city, and newer immigrant groups filled the neighborhoods behind them.