The end of the Civil War left the United States with mobilized forces that could pressure Spain over the Dominican Republic and support Mexican nationalists against the French-backed regime. British money may also have helped the Mexican cause, fitting a wider pattern of overlapping interests rather than solitary American action. William Seward contrasted the Monroe theory of 1860 with what he called an irreversible fact by 1868. His formulation shows how military capacity and favorable partnerships, not a change in Monroe's original wording, altered the doctrine's practical force.
Notable Point · 57:05-59:23
Seward called the doctrine an irreversible fact
After the Civil War, mobilized American forces and support for Mexican nationalists gave new coercive weight to a policy Seward said had recently been only a theory.