Ahistorian who compares the expansion od political systems to the expansion of economic system is organizing history by?

a.tensions between the colonial elites and the backcountry men of virginia.

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.