Which issue contributed most to the need
for this permanent sanitation group?

Looking at the picture attached, the issue that contributed most to the need for this permanent sanitation group is "Overpopulation."

This is because during this period around 1895, there increase in the population density in New York.

During this time, there are a lot of environmental issues such as floating sewage in the streets, dirt littering the neighborhoods, and fecal matter from animals like horses were a common sight during this period.

Hence, in this case, the correct answer to the question is that the issue that contributed most to the need for this permanent sanitation group is "Overpopulation."

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The issue of diseases and bad odour spreading due to accumulating dirt contributed most to the need for this permanent sanitation group.

Explanation:

i just did something on this guy a few days a go give me two minutes to find it in my notes.