Answer:
The Civil War confirmed the single political entity of the United States, led to freedom for more than four million enslaved Americans, established a more powerful and centralized federal government, and laid the foundation for America's emergence as a world power in the 20th century.
Step-by-step explanation:
It had many important repercussions which went on to have a deep and long lasting impact on the nation. Among these were the Emancipation Proclamation; the Assassination of President Lincoln; the Reconstruction of Southern America; and the Jim Crow Laws.