What major trend related to population occurred during the industrialization boom of the late 1800s A. Immigration decreased
B. Suburbanization decreased
C. Urbinization increased
D. Migration to rural areas increased

your answer is urbanization increased!

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(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.