It deals with opportunity costs. Opportunity costs are not real costs, but rather the things that you had to give up in order to obtain something else. What you didn't obtain is considered to be an opportunity cost. A production possibility curve deals with this.
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Assuming that you're talking about the Pacific War.
The battle that was fought in the most northern region would be the Autelian Island Campaign. The war zone was located on the northern part of the Pacific area
A...... separate countries from each other
The Native American tribe called the Muscogee, or Creek, occupy some land in present day Alabama, Georgia, and Florida. Their capital is based in Oklahoma.