Final answer:
A crucial issue that the nurse working in the late industrialization era would need to address to promote health is reducing the spread of infection.
Step-by-step explanation:
In the late industrialization era, a crucial issue the nurse would need to address in order to promote health is reducing the spread of infection.
During this time, there were still significant challenges in preventing the transmission of diseases due to inadequate sanitation and hygiene practices. The nurse would play a key role in educating the population about proper handwashing, food storage, and other preventive measures to reduce the spread of infectious diseases.
For example, teaching the importance of boiling bottles before using them for food storage and baby's milk, and protecting food from flies would be essential in preventing the transmission of diseases.