Final answer:
The growth of new cities and factories during the Industrial Revolution affected the economic life of Americans.
Step-by-step explanation:
The technological development of the Industrial Revolution that affected the economic life of Americans was the growth of new cities and factories. As industries expanded and factories were built, more job opportunities became available, leading to urbanization and increased economic activity. This development resulted in the rise of manufacturing and the transformation of the American economy from agrarian to industrial.
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