Answer:
I think it’s D, not exactly sure.
Explanation:
American settlers and American Indians often clashed as settlement spread across the West during that era
The colonies (13) would first pick up Africans from Africa, then travel back to the US to keep some for their own and then trade them to Europe. This is also known as the Triangular Slave Trade. If you are to look on a map, you can see that from Africa, to the US, then to Europe, it forms a triangle.
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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