Final answer:
The North's Civil War strategy included maintaining strong defensive positions, establishing long supply lines to support battles on distant grounds, and applying a strategy of total war to disrupt Confederate resources and morale.
Step-by-step explanation:
The North's strategy during the Civil War involved several key actions aimed at defeating the Confederacy and restoring the Union. First, the Union troops stood their ground and executed military tactics such as probing the opponent's flanks and, if necessary, pushing through the middle if flank attacks failed. Second, due to the geographical challenges, the Union had to contend with establishing long supply lines, fighting on unfamiliar ground, and managing a hostile civilian population. Third, there was a strategy of total war which eventually involved targeting not just the Confederate military, but also its economy and infrastructure, to break the will of the South and end any capacity to continue the war.
Although faced with a daunting task against the well-positioned Confederacy, the North's strategy and resource superiority ultimately allowed it to achieve victory by slowly choking off the Confederacy's ability to sustain its war effort. The Union's overall approach, including constructing a stable war economy and maintaining high public morale, was critical to its success.