How did massive immigration at the turn of the twentieth century affect the city of new york?

The United States was transformed from a predominately rural agrarian society to an industrial economy centered in large metropolitan cities. Prior to the American industrial revolution, most Americans were reared in largely isolated agricultural households and small towns that were linked to the external world by horse drawn wagons (Olmstead and Rhode 2000: 711). Except for towns that were connected to railroads or water borne shipping, isolation and the costs of overland transportation meant that many rural communities were largely self sufficient in food, clothing, and many other essentials of everyday life.

the answers are excess supply, and fall

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c.) biotic: snails; abiotic: temperature climate