What affect did Lincoln's Emancipation Proclamation have on the goals of the Union during the Civil War?

The issuing of the Emancipation Proclamation committed the United States to the abolition of slavery.

Freeing slaves in the North became the main focus of the Union.

When the Emancipation Proclamation was issued it shifted the Union's war aims to reunification of the nation.

The primary goal of the Union shifted to reaching out to European nations for help with fighting the South.