Answer:
D. To promote the pursuit of happiness
Explanation:
I memorized the whole preamble since 5th grade so I know it pretty well
I hope this helped :3
<h2>
A, B, and D.</h2>
<em>Yugoslavia had a communist government but resisted Soviet control,</em>
<em>When Hungarians tried to gain independence, the Soviet Union sent in tanks to crush the revolt</em>
<em>The United States sent aid to Greece and Turkey to prevent communism from spreading to those countries.</em>
Answer: It reinforced the United Nations' peacekeeping efforts in Somalia.