Final answer:
The photo supports the effect of urbanization that resulted in poor living conditions for those in poverty during the 1800s, with overcrowded and unsanitary environments in rapidly industrializing cities.
Step-by-step explanation:
The effect of urbanization in the 1800s that can be supported by evidence in the photo is the poor living conditions for those living in poverty. During the Industrial Era, rapid urbanization led to the development of areas with inadequate housing, sanitation, and transportation.
These conditions contributed to environmental degradation and psychological stress for those who had left rural areas seeking better opportunities in the cities. Furthermore, the overcrowded tenements and lack of clean water and fresh air in industrial cities often resulted in the spread of infectious diseases like cholera and tuberculosis, painting a grim picture of urban life for the working poor.