Conflict that began with the invasion of South Korea by North Korean forces on June 25, 1950, involved UN forces led by the United States, and ended with a ceasefire near the 38th parallel without a formal peace treaty.

• A. Vietnam War
• B. Korean War
• C. Arab-Israeli War
• D. Gulf War

Answer: (C)

This question tests your ability to recognize a major Cold War conflict by its start, who fought, and how it ended. It began when North Korea invaded South Korea on June 25, 1950, drew in United Nations forces led by the United States, and ended with an armistice near the 38th parallel in 1953, without a formal peace treaty. That sequence is the hallmark of the Korean War, making it the correct match. The other options describe different conflicts: the Vietnam War unfolded in Southeast Asia and ended with separate peace terms, not an armistice at the 38th parallel; the Arab-Israeli Wars and the Gulf War occurred in other regions and times and do not fit this outline.