Urbanization is changing the way people live and work in America. With higher population density, residents are creating economies of scale that allow greater access to goods from around the world at competitive prices. All the cities of the Eastern United States are linked via trade routes to the Old World and beyond, introducing items ranging from spices and food to luxury goods. The American trade industry is booming so much so that this nation's raw materials are in demand all over the world. New immigrants to American cities can participate in the exiting endeavors of world trade, working on docks loading and unloading cargo or helping ship raw materials from mines and factories to the ships that will take them overseas.

The American housing industry needs laborers to build and help move large tracts of lumber across many miles of land. Similarly, giant steel companies are hiring as many...
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