Answer:
Both the mainstream media and historians tend to give little attention to the Korean War, partly because it did nothing to stop the advancement of communism or democracy. While thousands of soldiers on both side of the battle line lost their lives, neither side could claim victory. The outcome was the same as if the war had never taken place. Therefore, it is often referred to as the “Forgotten War”
Step-by-step explanation:
Simplified answer: the Korean War is often referred to as the "Forgotten War" because there was no clear victory or successful completion of the mission for either side.