Question: The organization authorized giving troops the ability to follow North Korean forces recognises how many regions in the continent Efim Zelmanov was born?

Efim Isaakovich Zelmanov (; born 7 September 1955 in Khabarovsk) is a Russian-American mathematician, known for his work on combinatorial problems in nonassociative algebra and group theory, including his solution of the restricted Burnside problem. He was awarded a Fields Medal at the International Congress of Mathematicians in Zürich in 1994. <SEP> the African Group, with 54 member states the Asia - Pacific Group, with 53 member states the Eastern European Group, with 23 member states the Latin American and Caribbean Group (GRULAC), with 33 member states the Western European and Others Group (WEOG), with 28 member states, plus 1 member state (the United States) as an observer state. <SEP> Khabarovsk is served by the Khabarovsk Novy Airport with international flights to East Asia, Southeast Asia, European Russia, and Central Asia. <SEP> MacArthur made a statement demanding the KPA's unconditional surrender. Six days later, on 7 October, with UN authorization, the UN Command forces followed the ROK forces northwards. The X Corps landed at Wonsan (in southeastern North Korea) and Riwon (in northeastern North Korea), already captured by ROK forces. The Eighth U.S. Army and the ROK Army drove up western Korea and captured Pyongyang city, the North Korean capital, on 19 October 1950. The 187th Airborne Regimental Combat Team ("Rakkasans") made their first of two combat jumps during the Korean War on 20 October 1950 at Sunchon and Sukchon. The missions of the 187th were to cut the road north going to China, preventing North Korean leaders from escaping from Pyongyang; and to rescue American prisoners of war. At month's end, UN forces held 135,000 KPA prisoners of war. By 1 October 1950, the UN Command repelled the KPA northwards past the 38th parallel; the ROK Army crossed after them, into North Korea. As they neared the Sino-Korean border, the UN forces in the west were divided from those in the east by 50–100 miles of mountainous terrain. <SEP> on 27 june, rhee evacuated from seoul with some of the government. on 28 june, at 2 am, the south korean army blew up the highway bridge across the han river in an attempt to stop the north korean army. the bridge was detonated while 4,000 refugees were crossing the bridge, and hundreds were killed. destroying the bridge also trapped many south korean military units north of the han river. in spite of such desperate measures, seoul fell that same day. a number of south korean national assemblymen remained in seoul when it fell, and forty-eight subsequently pledged allegiance to the north. <SEP> on 30 september, zhou enlai warned the united states that china was prepared to intervene in korea if the united states crossed the 38th parallel. zhou attempted to advise north korean commanders on how to conduct a general withdrawal by using the same tactics which had allowed chinese communist forces to successfully escape chiang kai-shek's encirclement campaigns in the 1930s, but by some accounts north korean commanders did not utilize these tactics effectively. historian bruce cumings argues, however, the kpa's rapid withdrawal was strategic, with troops melting into the mountains from where they could launch guerrilla raids on the un forces spread out on the coasts.