The main reason why Twain used this term because after the Civil War, during the reconciliation period the American society was in the rise, strengthen by economical and industrial progress, but on the other side the society was corrupted, especially the politicians.
It was Plessy v.
<span> Ferguson</span> that upheld the doctrine of "separate but equal" this decision was later overturned by the landmark case of Brown v. Board of Education.