In foreign policy, Reagan: a. initiated the largest military buildup in American history. b. called for a halt to the development of nuclear weapons. c. opposed "authoritarian" noncommunist regimes. d. decreased military spending. e. embraced Carter's emphasis on human rights.

In foreign policy, Reagan: a. initiated the largest military buildup in American history.

Explanation:

Fearing the Soviet Union had a military advantage over the US during their political rivalry known as the Cold War, and being a strong opponent to Communism, Reagan sought to strengthen America's army and technology to defend the nation and weaken the communist Soviet Union and its allies. During his term, he significantly increased military spending and initiated the largest military buildup in American history, creating much of American's firepower that exists nowadays and doing researches and programs to make the U. S. invulnerable to nuclear missile attacks. At the end of his term, Reagan achieved to protect the nation, make the world see it as a major superpower and keep it from getting into a war.