Question: When was the last time the region where Han Vodka originates was united?

full_context: Document 1: Russian Standard (vodka): Winter grain from Russian steppes are milled and fermented. The raw spirit is distilled four times for the Original and Platinum variants while the Imperia spirit is distilled eight times.
Document 2: Korean War: The Korean War (in South Korean Hangul: 한국전쟁; Hanja: 韓國戰爭; RR: Hanguk Jeonjaeng, ``Korean War ''; in North Korean Chosŏn'gŭl: 조국해방전쟁; Hancha: 祖國解放戰爭; MR: Choguk haebang chǒnjaeng,`` Fatherland Liberation War''; 25 June 1950 -- 27 July 1953) was a war between North Korea (with the support of China and the Soviet Union) and South Korea (with the principal support of the United States). The war began on 25 June 1950 when North Korea invaded South Korea following a series of clashes along the border. The United Nations, with the United States as the principal force, came to the aid of South Korea. China came to the aid of North Korea, and the Soviet Union also gave some assistance to the North.
Document 3: Vodka Perfect: Vodka Perfect is an international brand of vodka, produced by Renaissance-Perfect, an Israeli-based company which operates three large manufacturing facilities in Israel and Romania.
Document 4: Korean War: Korea was ruled by Japan from 1910 until the closing days of World War II. In August 1945, the Soviet Union declared war on Japan and—by agreement with the United States—occupied Korea north of the 38th parallel. U.S. forces subsequently occupied the south and Japan surrendered. By 1948, two separate governments had been set up. Both governments claimed to be the legitimate government of Korea, and neither side accepted the border as permanent. The conflict escalated into open warfare when North Korean forces—supported by the Soviet Union and China—invaded South Korea on 25 June 1950. On that day, the United Nations Security Council recognized this North Korean act as invasion and called for an immediate ceasefire. On 27 June, the Security Council adopted S/RES/83: Complaint of aggression upon the Republic of Korea and decided the formation and dispatch of the UN Forces in Korea. Twenty-one countries of the United Nations eventually contributed to the defense of South Korea, with the United States providing 88% of the UN's military personnel.
Document 5: Three Olives Vodka: Three Olives Vodka is made from quadruple-distilled winter wheat harvested in England. The vodka is handcrafted and is available as a clear unflavored vodka as well as a variety of infused vodkas. The flavored vodkas are made using the circulation method, where the vodka flows into the flavored liquid to create the flavored vodka. The water used is sourced from a lake in Wales that was created by a dam that flooded in 1888, submerging an old village.
Document 6: Korean War: The Korean War (in South Korean Hangul: 한국전쟁, Hanja: 韓國戰爭, Hanguk Jeonjaeng, "Korean War"; in North Korean Chosungul: 조국해방전쟁, Joguk Haebang Jeonjaeng, "Fatherland Liberation War"; 25 June 1950 – 27 July 1953)[a] was started when North Korea invaded South Korea. The United Nations, with United States as the principal force, came to aid of South Korea. China, along with assistance from Soviet Union, came to aid of North Korea. The war arose from the division of Korea at the end of World War II and from the global tensions of the Cold War that developed immediately afterwards.
Document 7: South Korea: On June 25, 1950, North Korea invaded South Korea, sparking the Korean War, the Cold War's first major conflict, which continued until 1953. At the time, the Soviet Union had boycotted the United Nations (UN), thus forfeiting their veto rights. This allowed the UN to intervene in a civil war when it became apparent that the superior North Korean forces would unify the entire country. The Soviet Union and China backed North Korea, with the later participation of millions of Chinese troops. After an ebb and flow that saw both sides almost pushed to the brink of extinction, and massive losses among Korean civilians in both the north and the south, the war eventually reached a stalemate. The 1953 armistice, never signed by South Korea, split the peninsula along the demilitarized zone near the original demarcation line. No peace treaty was ever signed, resulting in the two countries remaining technically at war. Over 1.2 million people died during the Korean War.
Document 8: History of Korea: After the end of WWII in 1945, the Allies divided the country into a northern area, protected by the Soviets, and a southern area protected primarily by the United States. In 1948, when the powers failed to agree on the formation of a single government, this partition became the modern states of North and South Korea. The peninsula was divided at the 38th Parallel: the ``Republic of Korea ''was created in the south, with the backing of the US and Western Europe, and the`` Democratic People's Republic of Korea'' in the north, with the backing of the Soviets and the communist People's Republic of China. The new premier of North Korea, Kim il - Sung launched the Korean War in 1950 in an attempt to reunify the country under Communist rule. After immense material and human destruction, the conflict ended with a cease - fire in 1953. The two nations officially remain at war because a peace treaty was never signed. Both states were accepted into the United Nations in 1991.
Document 9: Division of Korea: With the onset of the Cold War, negotiations between the United States and the Soviet Union failed to lead to an independent, unified Korea. In 1948, UN-supervised elections were held in the US - occupied south only. This led to the establishment of the Republic of Korea in South Korea, which was promptly followed by the establishment of the Democratic People's Republic of Korea in North Korea. The United States supported the South, the Soviet Union supported the North, and each government claimed sovereignty over the whole Korean peninsula.
Document 10: Division of Korea: The division of Korea between North and South Korea occurred after World War II, ending the Empire of Japan's 35 - year rule over Korea in 1945. The United States and the Soviet Union each occupied a portion of the peninsula, with the boundary between their zones of control along the 38th parallel.
Document 11: SKYY vodka: SKYY vodka is an American vodka spirit produced by the Campari America division of Campari Group of Milan, Italy, formerly SKYY Spirits LLC. SKYY Vodka is 40% ABV or 80 proof, except in Australia and New Zealand where it is 37.5% ABV / 75 Proof and in South Africa where it is 43% ABV / 86 Proof. Its creator, Maurice Kanbar, claims the vodka is nearly congener-free due to its distillation process. That is why the popular company slogan is "Vodka so filtered - we even took the Russia out of it". The bottle is a cobalt blue with a clear, adhesive label. In 2008, SKYY expanded the SKYY Vodka line with seventeen new flavors, referred to as SKYY Infusions. These SKYY Infusions are made with fruit.
Document 12: Tito's Vodka: Tito's Handmade Vodka is a vodka produced in Austin, Texas, (in the state's first legal distillery) established by Tito Beveridge. Prided for being handmade, the vodka is also notable for being made from yellow corn, instead of the more commonly used potatoes or wheat. Using corn results in a mildly sweet aftertaste. The vodka has been advertised as gluten free.
Document 13: Han Vodka: Han Vodka is an 80 proof vodka from Korea made from barley, rice and "pure spring water". This smooth and clean tasting Vodka is made from barley and rice which is fermented and distilled in small batches. It is imported by Progressive Beverages located in Fullerton, California. Progressive Beverages also imports Han Soju which is a 48 proof Korean Soju. It is available in plain Soju form as well as 4 Soju based flavors: Citruss, Fire, Teq and Cane. You can find HAN Soju and flavors information at www.HANspirits.com. It is only available in the California Market at this time and is distributed by Young's Market Company, Inc. located in Tustin, California.
Document 14: Korean War: Korea was ruled by Imperial Japan from 1910 until the closing days of World War II. In August 1945, the Soviet Union declared war on Imperial Japan, as a result of an agreement with the United States, and liberated Korea north of the 38th parallel. U.S. forces subsequently moved into the south. By 1948, as a product of the Cold War between the Soviet Union and the United States, Korea was split into two regions, with separate governments. Both claimed to be the legitimate government of all of Korea, and neither accepted the border as permanent. The conflict escalated into open warfare when North Korean forces -- supported by the Soviet Union and China -- moved into the south on 25 June 1950. On 27 June, the United Nations Security Council authorized the formation and dispatch of UN forces to Korea to repel what was recognized as a North Korean invasion. Twenty - one countries of the United Nations eventually contributed to the UN force, with the United States providing 88% of the UN's military personnel.
Document 15: Jean-Marc XO Vodka: Jean-Marc XO Vodka is a premium vodka distilled in the Cognac region of France by Jean-Marc Daucourt and owned by the Campari Group.
ground_truth: in 1945
sub_queries: What country released Han Vodka? Answer: Korea
when was the last time Korea was united Answer: in 1945