Question: Who did the first Allied nation to reach the German city where the director of The Man from Morocco was born support in the Korean War?

full_context: Document 1: Modern history: After World War II, Europe was informally split into Western and Soviet spheres of influence. Western Europe later aligned as the North Atlantic Treaty Organization (NATO) and Eastern Europe as the Warsaw Pact. There was a shift in power from Western Europe and the British Empire to the two new superpowers, the United States and the Soviet Union. These two rivals would later face off in the Cold War. In Asia, the defeat of Japan led to its democratization. China's civil war continued through and after the war, resulting eventually in the establishment of the People's Republic of China. The former colonies of the European powers began their road to independence.
Document 2: The Man Between: The Man Between (also known as Berlin Story) is a 1953 British thriller film directed by Carol Reed and starring James Mason, Claire Bloom, Hildegard Knef and Geoffrey Toone. The screenplay concerns a British woman on a visit to post-war Berlin, who is caught up in an espionage ring smuggling secrets into and out of the Eastern Bloc.
Document 3: Korean War: The Chinese intervention in late October 1950 bolstered the Korean People's Air Force (KPAF) of North Korea with the MiG-15, one of the world's most advanced jet fighters. The fast, heavily armed MiG outflew first-generation UN jets such as the F-80 (United States Air Force) and Gloster Meteors (Royal Australian Air Force), posing a real threat to B-29 Superfortress bombers even under fighter escort. Fearful of confronting the United States directly, the Soviet Union denied involvement of their personnel in anything other than an advisory role, but air combat quickly resulted in Soviet pilots dropping their code signals and speaking over the wireless in Russian. This known direct Soviet participation was a casus belli that the UN Command deliberately overlooked, lest the war for the Korean peninsula expand to include the Soviet Union, and potentially escalate into atomic warfare.
Document 4: Spectre (2015 film): After wrapping up in England, production travelled to Morocco in June, with filming taking place in Oujda, Tangier and Erfoud, after preliminary work was completed by the production's second unit. An explosion filmed in Morocco holds a Guinness World Record for the "Largest film stunt explosion" in cinematic history, with the record credited to production designer Chris Corbould. Principal photography concluded on 5 July 2015. A wrap-up party for Spectre was held in commemoration before entering post-production. Filming took 128 days.
Document 5: Our Man in Jamaica: Our Man in Jamaica/Operation Jamaica () is an 1965 Italian Spanish German international co-production Eurospy adventure film directed by an uncredited Mel Welles. It was credited to for reasons of European funding.
Document 6: Division of Korea: At the Tehran Conference and the Yalta Conference, the Soviet Union promised to join its allies in the Pacific War in two to three months after victory in Europe. On August 8, 1945, three months to the day after the end of hostilities in Europe, and two days after the atomic bomb was dropped on Hiroshima, the Soviet Union declared war on Japan. Soviet troops advanced rapidly, and the US government became anxious that they would occupy the whole of Korea. On August 10, 1945 two young officers -- Dean Rusk and Charles Bonesteel -- were assigned to define an American occupation zone. Working on extremely short notice and completely unprepared, they used a National Geographic map to decide on the 38th parallel. They chose it because it divided the country approximately in half but would place the capital Seoul under American control. No experts on Korea were consulted. The two men were unaware that forty years before, Japan and pre-revolutionary Russia had discussed sharing Korea along the same parallel. Rusk later said that had he known, he ``almost surely ''would have chosen a different line. The division placed sixteen million Koreans in the American zone and nine million in the Soviet zone. To the surprise of the Americans, the Soviet Union immediately accepted the division. The agreement was incorporated into General Order No. 1 (approved on 17 August 1945) for the surrender of Japan.
Document 7: Soviet Union in the Korean War: Though not officially belligerent during the Korean War (1950 -- 1953), the Soviet Union played a significant, covert role in the conflict. It provided material and medical services, as well as Soviet pilots and aircraft, most notably MiG 15 fighter jets, to aid the North Korean - Chinese forces against the United Nations Forces.
Document 8: Aftermath of World War II: The Aftermath of World War II was the beginning of an era defined by the decline of all great powers except for the Soviet Union and the United States, and the simultaneous rise of two superpowers: the Soviet Union (USSR) and the United States of America (USA). Allies during World War II, the USA and the USSR became competitors on the world stage and engaged in the Cold War, so called because it never resulted in overt, declared hot war between the two powers but was instead characterized by espionage, political subversion and proxy wars. Western Europe and Japan were rebuilt through the American Marshall Plan whereas Central and Eastern Europe fell under the Soviet sphere of influence and eventually an ``Iron Curtain ''. Europe was divided into a US - led Western Bloc and a Soviet - led Eastern Bloc. Internationally, alliances with the two blocs gradually shifted, with some nations trying to stay out of the Cold War through the Non-Aligned Movement. The Cold War also saw a nuclear arms race between the two superpowers; part of the reason that the Cold War never became a`` hot'' war was that the Soviet Union and the United States had nuclear deterrents against each other, leading to a mutually assured destruction standoff.
Document 9: Mutz Greenbaum: Mutz Greenbaum (3 February 1896 – 5 July 1968), sometimes credited as Max Greene or Max Greenbaum, was a Berlin, Germany-born film cinematographer.
Document 10: Guido Seeber: Guido Seeber (22 June 1879 in Chemnitz – 2 July 1940 in Berlin) was a German cinematographer and pioneer of early cinema.
Document 11: Max Ehrlich: Max Michaelis Ehrlich (7 December 1892, Berlin – 1 October 1944, Auschwitz concentration camp) was a German actor, screenwriter, and director on the German theater, comedy and cabaret scene of the 1930s.
Document 12: Maxime Alexandre: Maxime Alexandre (February 4, 1971 in Ronse, East Flanders, Belgium) is a Belgian cinematographer, with a career focused mostly on horror movies.
Document 13: Race to Berlin: The western Allies' decision to leave eastern Germany and the city of Berlin to the Red Army -- honoring the agreement they made with the Soviet Union at Yalta -- eventually had serious repercussions as the Cold War emerged and expanded in the post-war era.
Document 14: Military history of the United States: The Korean War was a conflict between the United States and its United Nations allies and the communist powers under influence of the Soviet Union (also a UN member nation) and the People's Republic of China (which later also gained UN membership). The principal combatants were North and South Korea. Principal allies of South Korea included the United States, Canada, Australia, the United Kingdom, although many other nations sent troops under the aegis of the United Nations. Allies of North Korea included the People's Republic of China, which supplied military forces, and the Soviet Union, which supplied combat advisors and aircraft pilots, as well as arms, for the Chinese and North Korean troops.
Document 15: The Man from Morocco: The Man from Morocco is a 1945 action adventure film directed by Mutz Greenbaum as Max Greene. The film was produced by Welwyn Studios in Great Britain.
ground_truth: the North Korean - Chinese forces
sub_queries: The Man from Morocco >> director Answer: Mutz Greenbaum
What is the place of birth of Mutz Greenbaum ? Answer: Berlin
what allied nation was the first to reach the german capitol of Berlin Answer: Soviet Union
who did Soviet Union support in the korean war Answer: the North Korean - Chinese forces