Why did so many people die in the Brooklyn tenements?

Many people died in the Brooklyn tenements due to overcrowded living conditions, poor sanitation, and lack of access to healthcare. These buildings were often poorly constructed and lacked adequate ventilation, leading to the spread of diseases such as tuberculosis and cholera. Additionally, the influx of immigrants and low-income families strained resources, making it difficult to maintain safe living environments. The combination of these factors created a public health crisis that contributed to high mortality rates.