After the emancipation proclamation the central goals of the civil war were

To end slavery and break up the Union

Explanation:

The main causes of the outbreak of war were slavery, north-south contrasts, exacerbated southern nationalism at the time, interstate tariffs, which incalculated northern industrialized products to the detriment of southern agricultural products, regional issues, and fop of the war: the election of Abraham Lincoln, Republican, openly pro-liberating slaves in the south. But in short, the major objectives of this conflict were to preserve unity and end slavery.

i think it is the byzantine empire