The answer is the last choice, commonality.
The League of Nations was originally formed to promote world peace but was a <span>failure and one of the causes of WW2.</span>
<span>Disease and pollution: improper sewage disposal, contaminated drinking water triggering epidemics of typhoid fever and cholera; fires; overcrowding; and jobs where the causes of urban living in the late 1800s</span>
The correct answer is C.) the Americans forced British soldiers to retreat to Britain.
