What problems did Jacob riis help expose?

Jacob Riis was instrumental in exposing the harsh living conditions of the urban poor in late 19th-century America, particularly in New York City. Through his groundbreaking work, "How the Other Half Lives," he highlighted issues such as overcrowding, unsanitary environments, and the struggles of immigrant families. His vivid Photography and compelling narratives brought attention to social injustices, ultimately influencing public policy and reform efforts aimed at improving living conditions for the impoverished. Riis's advocacy helped raise awareness about poverty and the need for social change.