Abraham Lincoln was the political leader for the Union. He was a republican.
oh shoot! that gun is huge
Ulysses S. Grant and William T. Sherman were the military leaders for the Union.
The north were set on supplies, because of their factories. On the other hand the south was asking European countries to trade, so they could get more supplies. To prevent this the north sued a the anaconda plan to prevent the south from trading with other countries.
The Union had many advantages over the Confederacy. One of them were the Union's weaponry. They had more powerful guns, and canons.
Another advantage that the north has is their transportation. They have many more railroads than the South. These railroads made it easier to transport the resources used by the soldiers in the Union.
The last main advantage the North had over the South was their economy. The North had industries which meant more money. The South had lots of farms and very few factories. More money meant more supplies and resources for the Union soldiers.