when did un troops approach the yalu river
Yalu River The Korean side of the river was heavily industrialized during the period of Japanese rule (1910–1945), and by 1945 almost 20% of Imperial Japan's total industrial output originated in Korea. During the Korean War, the movement of United Nations troops approaching the river precipitated massive Chinese intervention from around Dandong. In the course of the conflict every bridge across the river except one was destroyed. The one remaining bridge was the Sino–Korean Friendship Bridge connecting Sinuiju, North Korea to Dandong, China. During the war the valley surrounding the western end of the river also became the focal point of a series of dogfights for air superiority over North Korea, earning the nickname "MiG Alley" in reference to the MiG-15 fighters flown by the combined North Korean, Chinese and Soviet forces.[citation needed]
Yarra River The lower stretches of the river are where the city of Melbourne was established in 1835 and today Greater Melbourne dominates and influences the landscape of its lower reaches. From its source in the Yarra Ranges, it flows 242 kilometres (150Â mi) west through the Yarra Valley which opens out into plains as it winds its way through Greater Melbourne before emptying into Hobsons Bay in northernmost Port Phillip.