The 16th president of the United States Abraham Lincoln was a republican who opposed slavery.
Ulysses S Grant and William T Sherman were the main American generals in for the Union in the civil war.
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The anaconda plan was a plan created by the Union that was made to 'suffocate' the South by setting up blockades so they were not able to trade with any other countries. The Union army would then divide and isolate various parts of the Confederacy, eventually capturing the capitol Richmond.
The north had the advantage of better transportation and more people and better weapons because of the amount of factories that produced steel.
A disadvantage for the North would be that they weren't familiar with the territory.
Another advantage of the north was that they had strength in numbers. There were more men in the north that offered to volunteer.