Why did it seem early in the war that North Korea would win?

North Korean forces invaded in June 1950 and advanced rapidly, capturing Seoul and pushing South Korean and allied forces into a small area around Pusan. Because they controlled most of the peninsula so quickly, it seemed early on that North Korea would win. North Korea’s military advantages also mattered, but the rapid capture of territory is the best answer here.

AI-written and checked against the verified answer.