Answer: Change in tenement housing depicts increase of urban population during the late 19th century. These changes were mostly harmul for immigrants and poor urban workers living there.
Step-by-step explanation:
Urban tenement housing from 1900 is much more compact compared to the one in 1860. This is because of the massive migration to urban areas such as New York, California, etc by African Americans, and other Anglo-Saxons looking for job opportunities. Subsequently, the rising urban population combined with an influx of new immigrants from Eastern and Southern Europe, China, etc, decreased the conditions of tenement housing due to crowding. Progressive reformers during this time such as Jacob Riis and Jane Addams pushed for building codes so that basic needs like light and ventilation were implmented. Thus, it could be argued that the changes were bad for the people living in these urban areas, however, the countinued progress of reforming tenement housing was a sliver of hope for bettering conditions.