Diseases like dysentery,cholera,typhoid,etc.,are more common in overcrowded human settlements. Why?

(N/A) Diseases like dysentery,cholera,and typhoid are more common in overcrowded human settlements due to the following reasons:
$1$. Poor Sanitation: Overcrowded areas often lack proper waste disposal systems,leading to the accumulation of garbage and human/animal excreta in the open.
$2$. Contamination: These conditions facilitate the contamination of drinking water and food sources with pathogens.
$3$. Infectious Nature: These diseases are infectious and spread easily from one person to another through contaminated water,food,or direct contact.
$4$. High Population Density: In overcrowded settlements,the close proximity of individuals increases the rate of transmission of pathogens,leading to rapid outbreaks of diseases like cholera,typhoid,and $TB$.