But with the victory at Antietam in September 1862, Lincoln brought out an idea which he read before his cabinet, that slaves held in the Confederate States were declared to be free. He would declare it formally with his Emancipation Proclamation on January 1, 1863. Although it did not include those areas under Union control, and officially it was a war measure, it had a great deal of significance as a symbol, and European countries who had toyed with the idea of recognizing the Confederacy abandoned it and supported the Union. | But with the victory at Antietam in September 1862, Lincoln brought out an idea which he read before his cabinet, that slaves held in the Confederate States were declared to be free. He would declare it formally with his Emancipation Proclamation on January 1, 1863. Although it did not include those areas under Union control, and officially it was a war measure, it had a great deal of significance as a symbol, and European countries who had toyed with the idea of recognizing the Confederacy abandoned it and supported the Union. |