After which major conflict did African Americans see efforts to secure voting rights through constitutional amendments?

The correct response is that after the Civil War, significant efforts were made to secure voting rights for African Americans through constitutional amendments. This period marked a pivotal transformation in American society, as the war resulted in the abolition of slavery and set the stage for the Reconstruction Era, during which various reforms were attempted to integrate formerly enslaved people into civic life.

Notably, the 13th, 14th, and 15th Amendments were introduced during this time. The 13th Amendment abolished slavery, the 14th Amendment granted citizenship and equal protection under the law to everyone born in the United States, and the 15th Amendment specifically aimed to protect the voting rights of African American men by prohibiting the federal and state governments from denying a citizen the right to vote based on "race, color, or previous condition of servitude."

These amendments were foundational in the ongoing struggle for civil rights and voting equality that continued well beyond the Reconstruction era. The significant legal changes initiated post-Civil War set a precedent for future civil rights movements aimed at combating racial discrimination and ensuring voting access.

In contrast, the other conflicts listed did not result in immediate or significant constitutional changes aimed specifically at securing voting rights for African Americans. The American Revolution focused