Final answer:
Progressive reformers of the late 19th and early 20th century focused on addressing social problems caused by urban industrialism.
Step-by-step explanation:
The progressive reformers of the late nineteenth and early twentieth century focused their attention on the social problems created by urban industrialism. They aimed to address issues such as poor working conditions, child labor, unsafe food and products, and corrupt political systems. Their efforts led to the development of laws and regulations to improve the lives of workers and promote social justice.
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