Final answer:
Transportation changes in cities led to the separation of rich and poor people in separate neighborhoods.
Step-by-step explanation:
An effect of transportation changes in cities by the 1820s was that rich and poor people lived in separate neighborhoods. As cities grew and transportation methods improved, wealthier individuals were able to move to more desirable areas, leaving the less affluent behind in the older, less developed sections of the city. This separation between the rich and poor resulted in distinct neighborhoods with different levels of resources and opportunities.
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