The answer would be, "C", "Communism was a threat to American beliefs and values".
B. geographical boundaries created in earlier historical periods
The three reasons that President Truman provides is "<span>But we knew that our enemies were on the search for it. We know now how close they were to finding it. And we knew the disaster, which would come to this Nation, and to all peace-loving nations, to all civilization, if they had found it first. That is why we felt compelled to undertake the long and uncertain and costly labor of discovery and production".</span>
Segregation and discrimination were just as bad, or worse, in northern cities as in the South is incorrect<span>
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