Final answer:
The crowded back-to-back housing in Toxteth in the 19th century had poor living conditions, including overcrowding, lack of sanitation, and disease spread.
Step-by-step explanation:
In the 19th century, a big problem with the crowded back-to-back housing in Toxteth and other cities was the poor living conditions. The housing was often rundown, overcrowded, and lacked proper sanitation and ventilation. As a result, diseases such as tuberculosis and pneumonia spread quickly. The buildings were crammed together, and the lack of fire protection posed a danger.
Overcrowded housing was a common problem during the Industrial Revolution, as rapid urbanization and industrialization led to an influx of people into cities, resulting in inadequate housing and living conditions for many. Additionally, the lack of clean water and the presence of open sewers contributed to poor sanitation and the spread of diseases.