The sudden increase in population enabled disease to spread quickly due to the cities being extremely congested. A lack of hygiene, poor nutrition, and little to no knowledge about about sanitation provided a perfect scenario for diseases such as smallpox, typhus, scarlet fever, tuberculosis, and cholera to thrive. Overall, the cities were very unsanitary and contaminated water provided diseases to spread easily. Disease is sought to be the cause of death among the thousands of people of London in the 19th century. Disease became inevitable within the urban areas affecting most citizens. Disease was a major contribution as to why the average life expectancy in England was extremely low at the time.
