What is the result of the American Civil War?

In the years 1861-1865, the territory of the United States was engulfed in a civil war. It killed the largest number of American citizens in its entire military history. The reason for the war was the secession of the South, dissatisfied with the abolition of slavery in the country. Ultimately, the South lost. The result of the war was the abolition of slavery throughout the United States and the unification of the country. But the former slaves did not receive much rights. From here began the origins of the segregation policy in the country.