How did the north achieve victory in the civil war? a) through attrition and massive advances on several fronts b) by fighting mainly on northern territory c) by firing on fort sumter d) by relying solely on a naval blockade e) by following the anaconda plan

A) Through attrition and massive advances on several fronts.

Explanation:

It is unclear why exactly the North won the Civil War. However, several explanations have been proposed. One of these is the attack strategy of both areas. The North, on the one hand, gained an advantage through attrition and massive advances on several fronts, while the South failed to attack critical areas of the North's infrastructure, such as transportation and communications.

d: social contract theory

because it took place after the war of 1812 had come to an end.