The integrity of the USA - which largely meant safeguarding the cotton revenues.
I don't know, what i do know is at the beginning Lincoln said he was fighting to save the union.
in the beginning of the war the union stragety was known as the anaconda plan
They lacked great leaders, and at the beginning of the war were not fighting with as much devotion to the cause as the Confederacy.
it was important to keep the border states in union
In the beginning of the Civil War the North was fighting to join the South back into the Union. While to the South the war was about defense, to protect their new country Confederate States of America(C.S.A). By the end of the war the North was fighting against the 'Peculiar Institution in other words slavery, while the South was fighting to save it.
A diadvantage the union had at the beginning of the war was lack of experience of the soldiers and not enough connection between them and the generals
At first there were no black soldiers fighting for the union until later on during the war.
The Union soldiers thought that they were fighting for slaves to be free.
The Confederates and The Union
South or The Confederacy and the North or The Union
The US was fighting the USSR, or the Soviet Union, in the cold war. Mostly, though, it was democracy against communism.
The Cold War led the Soviet Union and Afghanistan to actual fighting.