The right of revolution is an inherent one. When people are oppressed by their government, it is a natural right they enjoy to relieve themselves of oppression, if they are strong enough, whether by withdrawal from it, or by overthrowing it and substituting a government more acceptable.
"The Southern rebellion was largely the outgrowth of the Mexican war. Nations, like individuals, are punished for their transgressions. We got our punishment in the most sanguinary and expensive war of modern times."