How was slavery settled?

Answer 1

The Emancipation Proclamation was criticized at the time for freeing only the slaves over which the Union had no power. Although most slaves were not freed immediately, the Proclamation did free thousands of slaves the day it went into effect[2] in parts of nine of the ten states to which it applied (Texas being the exception).[3] In every Confederate state (except Tennessee and Texas), the Proclamation went into immediate effect in Union-occupied areas and at least 20,000 slaves[2][3] were freed at once on January 1, 1863.

Additionally, the Proclamation provided the legal framework for the emancipation of nearly all four million slaves as the Union armies advanced, and committed the Union to ending slavery, which was a controversial decision even in the North. Hearing of the Proclamation, more slaves quickly escaped to Union lines as the Army units moved South. As the Union armies advanced through the Confederacy, thousands of slaves were freed each day until nearly all (approximately 4 million, according to the 1860 census)[4] were freed by July 1865.

Near the end of the war, abolitionists were concerned that while the Proclamation had freed most slaves as a war measure, it had not made slavery illegal. Several former slave states had already passed legislation prohibiting slavery; however, in a few states, slavery continued to be legal, and to exist, until December 18, 1865, when the Thirteenth Amendment was enacted.

source: wikipedia: emapication prolacmation

Answer 2

Slavery was abolished in various ways around the world, including through legislation, international treaties, and social movements. Different countries had different approaches to ending slavery, such as the American Civil War leading to the 13th Amendment abolishing slavery in the United States, or the Slavery Abolition Act of 1833 which abolished slavery in the British Empire.