Fredrick Douglas was the African American who said the Mexican War was "disgraceful" because he thought if America would annex Mexico then slavery would be carried over into the new territory.
Frederick Douglass called the Mexican-American War disgraceful and cruel, criticizing it as a means to expand slavery. His opposition was rooted in his commitment to abolition and human rights, arguing that the war prioritized slaveholders' interests. Douglass's views echoed those of other abolitionists and critics of the war during that era.
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