Acanceled us treasury check for the purchase of

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;

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.