September 1862, after the Union win at Antietam, the first Northern victory against Lee, which gave him the credibility to issue it without making it look like a desperate measure.
It 'proclaimed' (not decreed) that all slaves in the rebel-states would be considered free, with effect from January 1st 1863. It was not a law, as Lincoln had no authority over the South at this time. But it did license Union troops to liberate any slaves they came across in their Southern campaigns.
The Proclamation was not the human-rights document it sounded like. (Among other thigns, it allowed slavery to continue in the slave-states that had remained loyal.)
It was chiefly an urgent wartime measure, aimed at preventing Britain and France from aiding the South, as this would now make them look pro-slavery themselves.
No. President Abraham Lincoln issued the Emancipation Proclamation.
The Emancipation Proclamation
1968
After, it allowed Lincoln to issue the Emancipation Proclamation
1968
The end
At the end of the civil war. (1865)
Abolitionists pressured Lincoln to end the slavery after the start of the Civil War in 1861. These pressures also affected Lincoln to declare the Emancipation Proclamation in 1863.
While it wasn't immediately following, the Battle of Antietam and the Union victory there gave President Lincoln the push to issue the proclamation. The Emancipation Proclamation was issued on January 1, 1863.
Lincoln. But they were freed by Union troops during their Southern campaigns, not by the Proclamation, which was mainly a tatcic to shame the British out of helping the cause of slavery.
pressuring him to take a stand on slavery
Abolitionists pressured Lincoln to end the slavery after the start of the Civil War in 1861. These pressures also affected Lincoln to declare the Emancipation Proclamation in 1863.