What was a significant outcome of the Civil War?

The abolition of slavery was a significant outcome of the Civil War, primarily achieved through the Emancipation Proclamation and later reinforced by the 13th Amendment to the Constitution. The war was fought not only over the preservation of the Union but also over the contentious issue of slavery, which divided the nation. The victory of the Union solidified the end of enslavement for millions of African Americans, fundamentally transforming the social and legal landscape of the United States. This outcome marked a major step towards civil rights and equality, although the struggle for full equal rights continued for many years after.

While the end of foreign intervention relates to the U.S. relying more on its own capabilities post-war, and the establishment of the United Nations is a much later event in 1945 resulting from World War II, these options do not directly address the immediate consequences of the Civil War regarding social justice. Equal rights for all citizens is a goal that was not fully realized until later in history, making the abolition of slavery the most direct and impactful outcome of the conflict.