Without suffering of.....
The correct answer is - preserved the union.
The Civil War in the United States was a long and bloody conflict. It was between the North and the South, the two halves that had totally different policies and ambitions for the future. Despite the war being terrible and with lot of people who lost their lives, as all wars, something good came out of it too. The big positive of the Civil War was that it actually managed to preserve the unity between the states, thus creating the mighty United States of America, which eventually became the biggest power house on the planet.
Lincoln waited to unveil the proclamation until he could do so on the heels of a Union military success
The judgment of the United States' Supreme Court in the trial Plessy V Ferguson resentfully transformed the living aspect of Blacks in the United States, as the ruling in the case made the state-sponsored segregation constitutional.
In the year 1896, the Supreme court commanded in a case Plessy v. Ferguson that the policy of the Whites of segregating the Blacks in the public facilities is fair. Therefore, the Plessy V. Ferguson verdict authorised the segregation sponsored by the state.