Which agreement formally ended the Korean War?

The Korean Armistice Agreement is the correct answer because it was the formal agreement that halted hostilities in the Korean War, which began in 1950. Signed on July 27, 1953, the Armistice established the Korean Demilitarized Zone (DMZ) to separate the two Koreas and effectively ended active combat. However, it is important to note that the Armistice did not result in a peace treaty, meaning that a formal state of war technically still exists between North and South Korea, but it established a ceasefire that has lasted for decades.

The other choices relate to different historical contexts and agreements. The Treaty of Versailles ended World War I and has no relation to the Korean War. The Bandung Conference Agreement was focused on promoting economic and cultural cooperation among Asian and African countries during the Cold War era, but did not address the conflict on the Korean Peninsula. Lastly, while the United Nations did play a role in the Korean War through resolutions advocating for intervention and support for South Korea, no specific UN resolution formally ended the war. Thus, the Korean Armistice Agreement is the crucial document that marks the cessation of hostilities in this conflict.