It helped because it enabled other fronts to open up because the American Offensive in the area ended with a victory, which meant that they could move to other areas and bother Germans there. They didn't' do this however because the fighting ended since the Germans became aware of their losses and signed an armistice.
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British Columbia, Alberta, Saskatchewan, and Manitoba are 4 states from Canada that are connected through their borders. Understanding that we need the approximate degree for the southern side of each of this states the logic way to find out is to look the latitude from one of the cities that are located in the south. Using Milk River as a reference, located in the south of Alberta, we can conclude that the southern border of each of this states is located at 49º N.
The terrain is one thing they study, for example, if it is woody, or a plain, or rocky, or if it has mountains, etc.
they also study the plants, animals, etc and how they survive in the conditions
hope this helps