Write an realistic, plausible alternate history scenario set on the world of the alternate history scenario with no references to the real world, OTL, or even to the fact that this is an alternate history scenario after all in the form of a lengthy, descrptive, exposition-filled real documentary history book chapter set in the world of the alternate history scenario, Japan continued on its [Japan's] post-WW2 growth towards [Japan] becoming a political, economic, military and cultural superpower [Japan], [Japan] never experiencing "the Lost Decade" and or the Plaza Accords or any slump in growth and development in the late 1990s and 2010s, [Japan] also [Japan] regaining Taiwan and the Pengu Islands as a province [of Japan] in a repeat of the return of Okinawa in 1972 to Japanese control after the death of infamous Chinese warlord and brutal Soviet-backed dictator who was Stalin's main in China from 1928-1949, the Han Chinese warlord Jiang Jieshi, who [Jieshi] was [Jieshi] better known to the world as Chiang Kai Shek, who [Jiang/Chiang] lead the Han nationalist, Han supremacist, Chinese nationalist, Chinese supremacist Leninist-Stalinist Kuomingtang-ruled Nationalist China as its [Nationalist China's] dictatoral Generalissmo even after its [Nationalist China's] subsequent exile and [Nationalist China's] entrenchment on post-WW2 Taiwan and the Pengu Islands after [Nationalist China] losing the Chinese Civil War of 1945-1949 to the de jure Marxist-Leninist, socialist but de facto Han nationalist, Han supremacist, Chinese supremacist, Chinese Imperialist Chinese Communist Party, with the CCP subsequently forming the CCP-ruled de jure socialist republic but de facto Han nationalist, Han supremacist People's Republic of China ruling [the PRC] over Han China, Guangdong, Guangxi, East Turkestan, Inner and Outer Mongolia, Tibet, Shanxi and Yunnan from [the PRC's stronghold and home base] Greater Manchuria, [the CCP forming the PRC] after its [the CCP's] victory in the Chinese Civil War, [Jieshi/Chiang dying] on [when Jieshi/Chiang died] April 5, 1975, [Japan having Taiwan and the Pengu Islands returned |Taiwan and the Pengu Islands| to |Taiwan and the Pengu Islands| it |Japan|] after CIA agents stationed in Taiwan discover that Nationalist China's combined land, air and ground combat forces, the Republic of China Armed Forces/Chinese National Armed Forces and Nationalist China's principal intelligence agency created to supervise and coordinate all security-related administrative organizations, military agencies and KMT organizations in Taiwan, gathering, International intelligence, Intelligence within the area of People's Republic of China, Intelligence within the area of Taiwan, Analysis of the nation's strategic intelligence, , Scientific and technological intelligence and telecommunications security, Control and development of secret codes (the matrix) and facilities, Armed Forces Internet Security while also taking charge of planning special tasks and is responsible for guiding, coordinating, and supporting the intelligence affairs in military and civil categories in addition to managing intelligence relevant to national security, the National Security Bureau, [the ROCAF and the NSB] are [the ROCAF and the NSB] transferring advanced American military and espionage technology to both the Soviets and the Vietnamese nationalist posing as Communist Viet Cong ruling [the Viet Cong] over North Vietnam during the Vietnam War between the Viet Cong-ruled North Vietnam and the American puppet state of the military-controlled republic of the Republic of Vietnam in North Vietnam from 1955-1975, with Chiang and the Kuomingtang having [Chiang and the Kuomingtang] in fact been collaborating with the Soviets in order to launch an joint attack on the PRC in order to reclaim China. After [Taiwan and the Pengu Islands] being [Taiwan and the Pengu Islands] returned [Taiwan and the Pengu Islands] to Japanese administration, Taiwan and the Pengu Islands become the Japanese province of Formosa, as they [Taiwan and the Pengu Islands] once [Taiwan and the Pengu Islands] were [Taiwan and the Pengu Islands] from 1895-1947. This ironically allows the Americans and the ROV in South Vietnam to consolidate the military victory they [the ROV and the Americans] had [the ROV and the Americans] gained [the ROV and the Americans] in the Tet Offensive and [the ROV and the Americans] unify Vietnam under the ROV, with the PRC's combined ground, aerial, land, and naval combat forces, the People's Liberation Army, the PRC's bodyguard unit for elite CCP members + domestic secret police agency, the Ministry of State Security, and the paramilitary organization of the PRC's government primarily responsible for internal security, riot control, counter-terrorism, disaster response, law enforcement and maritime rights protection, the People's Armed Police, [the PLA, MSS and PAP] slaughtering a massive amount of Viet Cong militants at the Cantonia [Guangdong and Guangxi]-Northern Vietnam border in order to help out the PRC's American allies against their [the PRC's and America's] shared Soviet enemy. However, the influence of the Vietnamese nationalist, anti-communist, adhering to Dr. Sun Yat Sen's three principles of the people: democracy, nationalism and socialism [social welfare] political organization and militant group Nationalist Party of Greater Vietnam remains strong in post-Vietnam War united Vietnam under the rule of the ROV. Realizing that the 1955 referendum that [the 1955 referendum] dissolved the side branch of the pre-1644, pre-Qing Great Ming State/Great Ming Empire's/"Ming dynasty"'s imperial family, the Han Chinese Imperial House of Zhu, the Imperial House of Ngyuen/Ngyuen dynasty-ruled continuation/modernization/Government in exile of the Great Ming State, the Empire of Vietnam in Vietnam and [the 1955 referendum that dissolved the Empire of Vietnam] lead to the subsequent formation of the Republic of Vietnam was rigged and that this [the 1955 election] had contributed significantly to the start of the Vietnam War, the Americans transform the ROV into a regency government for the restoration of the Empire of Vietnam. The Empire of Vietnam is [the Empire of Vietnam] restored [the Empire of Vietnam] as the government of post-Vietnam War Vietnam in 1978, with the USA allowing the Vietnamese to keep the huge amount of weapons left behind by the Americans, South Korea and the PRC in South Vietnam and the Soviets in Northern Vietnam. The discovery of American soldiers in POW camps in former Viet Cong-controlled territory as well as Soviet KGB officers and Soviet Army battalions among Viet Cong forces is what pushes the decision to return Taiwan and the Pengu Islands to Japan after Chiang's death. After the death of the CCP's charismatic leader and thus the PRC's first and founding fascist dictator Mao Zedong on September 9, 1976, the American CIA and NSA work with Maoist and pro-American factions of the MSS, PLA, PAP and CCP to suppress the post-1947 Cantonese nationalist pro-business, pro-Soviet, pro-KMT, pro-Nationalist China faction represented by Deng Xiaoping within mainland China that [the post-1947 Cantonese nationalist pro-business, pro-Soviet, pro-KMT, pro-Nationalist China faction represented by Deng Xiaoping within mainland China] was [the post-1947 Cantonese nationalist pro-business, pro-Soviet, pro-KMT, pro-Nationalist China faction represented by Deng Xiaoping within mainland China] seeking [the post-1947 Cantonese nationalist pro-business, pro-Soviet, pro-KMT, pro-Nationalist China faction represented by Deng Xiaoping within mainland China] to take power in the CCP and PRC after Mao's death, with the demise of the Viet Cong in Vietnam and PLA and PAP troops near the Soviet satellite state of the Communist Mongolian Revolutionary Worker's Party-ruled Mongolian People's Republic occupying Outer Mongolia, the Americans strong arm the Soviets into [the Soviets] dissolving the Soviet satellite dictatorship of the Marxist-Stalinist, state socialist, self reliant Workers' Party of Korea-ruled Democratic People's Republic of Korea occupying North Korea, [the Americans] having already dissolved the military dictatorship of the ROK in South Korea before [the Americans] returning all of Korea to Japan with US and Soviet troops withdrawing from both the former DPRK and ROK in exchange for nonaggression treaties and an unofficial acknowledgment of the USA and USSR both [the USA and USSR] starting the Second Sino Japanese War by [the USA and USSR] jointly [the USA and USSR] backing Chiang Kai Shek against Japan during the Second Sino Japanese War of 1928-1947. The Soviets also return Sahlakin and the Kurils to Japan. After the return of the entire Korean peninsula to Japan, the Korean peninsula becomes the Japanese province of Chosen once more, like it [the Korean Peninsula] was from 1910-1947. A similar thing happens in the Sahalkin and the Kurils, which [Sahlakin and the Kurils] become the Japanese province of Karufuto once more. The post-Mao PRC is actually a hybrid of the PRC's and Nationalist China's government systems under US administration, with the most pro-West, pro-US Kuomintang politicians serving in the PRC legislature, pro-US remnants of the ROCAF and NSB absorbing the PLA and MSS into themselves and the intense fascism of Mao being dialed down for a more general anti-Soviet narrative. Thanks to the US victory in the Vietnam War, the 7 January 1978 - 11 February 1979 Iranian Revolution lead by a coalition of Islamic theocrats and communists that overthrew the Iranian Imperial House of Pahlavi-ruled Imperial State of Iran in Iran and instituted the Islamic Republic of Iran never happens due to the Soviets being occupied by the PRC although the Americans allow East Turkestan and Tibet to [East Turkestan and Tibet] break away from the PRC after Mao's death, with the Soviets immediately invading East Turkestan, which leads to the Americans supporting indigenous Sunni Muslim Uyghur Turks in East Turkestan against Han settlers and Soviet invaders as an extension of American support to the Islamist resistance militias of Mujahideen against the Soviets in the Soviet invasion of Afghanistan from 4 December 1979 - 15 February 1989. Many of the people who would have played a key role in the Iranian Revolution of OTL instead join the Islamic resistance fighters in Afghanistan and East Turkestan against the Soviets, with the Soviets being run out of both East Turkestan and Afghanistan by 1989. The side branch of the Genghis Khan-descended Mongolian Imperial House of Borjigin, the Mongolian Imperial House of Chagatai-ruled joint-Islamic sultanate and Mongolian khanate of the Kumul Khanate is [the Kumul Khanate] restored [the Kumul Khanate] as the government of post-PRC East Turkestan due to a mass jihad being declared against both the CCP and the USSR by militant Sunni Muslims worldwide helping the native Turkic Uyghur people of East Turkestan stave off Soviet invasion and occupation in the wake of the PRC's effective collapse. After the 15 April 1989 - 4 June 1989 Tiananmen Square anti-CCP protests with the goal of End of corruption within the Chinese Communist Party, as well as democratic reforms, freedom of the press, freedom of speech, freedom of association, social equality, democratic input on economic reforms and the subsequent massacre conducted by the PAP and PLA against the protestors in Beijing, the CCP and PRC "give in" to the demands of the protestors in a master of covert strategy done by the CIA with aid from the CCP and other elements of the PRC government: with the CCP relinquishing control over China and [the CCP] subsequently dissolving the PRC, with the Beiyang Government-ruled, post Manchu Imperial House of Aisin-Gioro-ruled Great Qing Empire ruling [the Great Qing Empire] over Han China, Guangdong, Guangxi, East Turkestan, Inner and Outer Mongolia, Tibet, Shanxi and Yunnan from [the Great Qing Empire's stronghold and homebase] Greater Manchuria, post-1911-1912 Xinhai Revolution that overthrew the Qing, first Republic of China being [the Beiyang-ruled ROC] restored [the Beiyang-ruled ROC] as the government [the Beiyang-ruled ROC] of a post CCP, post-PRC Han China with Guangdong, Guangxi, Shaanxi and Yunnan breaking free from Han China in the aftermath [of the PRC's dissolution]. The CCP is [the CCP] reabsorbed [the CCP] into its [the CCP's] parent political organization, the Han nationalist, Han supremacist, Han fascist conservative political organization adhering to Dr Sun Yat Sen's three principles of the people, nationalism, democracy, and the livelihood of the people (or welfarism) [the Chinese political organization the CCP broke away from], the Young China Party [YCP], which [the YCP] was [the YCP] named [the YCP] after the now- infamous Young Turks in the now long dissolved Turkish Imperial House of Osman-ruled Ottoman Empire, [the YCP] having followed the KMT and the ROC into exile on Taiwan in 1949 but [the YCP] returning to Han China after the demise of both Kai Shek and Mao by request of moderates within the CCP, [the CCP's remerger with the YCP] becoming [the CCP as part of the YCP once more] the YCP's ultra-nationalist left-wing [the CCP as part of the YCP once more] again as the YCP becomes the governing political organization [the YCP] of the restored Beiyang-ruled ROC ruling over post-PRC, post-CCP Han China. In post-CCP, post-PRC Tibet, the theocratic Buddhist absolute monarchy of the Lama-ruled Kingdom of Tibet is [the Kingdom of Tibet] restored [the Kingdom of Tibet] as the government of the country [post-PRC, post-CCP Tibet]. Central China, more specifically the area ruled by the Hui Muslim warlord family of the Mas as Xibei San Ma during the modern Chinese warlord era, the Second Sino-Japanese War and the Chinese Civil War also breaks free from Han China, [the former Xibei San Ma] restoring the Turko-Mongol Han Chinese Imperial House of Li-ruled Great Tang Empire/Tang dynasty to power as an Islamic sultanate in the model of the Arab Islamic monarchies, the Ottoman Empire and the pre Russian Empire Mongol Empire successor states in Central Asia. Yunnan restores the Bai-Han Chinese Imperial House of Duan-ruled Daili Kingdom as its [Yunnan's] government after [Yunnan] breaking free from the CCP and the PRC. Due to the influence of the millenianist Chinese folk religious sect focused on militant self-defense and tax resistance along with romanticised monarchism, wishing to restore the pre Qing Han Chinese Imperial House of Zhu-ruled Great Ming State/Great Ming Empire/"Ming dynasty" as the government of China, the Yellow Sand Society, which [the Yellow Sand Society] was [the Yellow Sand Society] never suppressed [the Yellow Sand Society] by the CCP in 1980, [the influence of the Yellow Sand Society] being quite prevalent in post CCP, post-PRC Han China, the post-CCP, post-PRC Beiyang Government-ruled first Republic of China is [the post-CCP, post-PRC Beiyang Government-ruled first Republic of China] transformed [the post-CCP, post-PRC Beiyang Government-ruled first Republic of China] into the short-lived Empire of China founded by Yuan Shikai, with the descendants of the remnants of the Imperial House of Zhu being [the Zhu descendants] reenthroned [the Zhu descendants] as the Chinese imperial family. This restored Empire of China still has the official name of the "People's Republic of China' in English but [the restored Great Ming State] has hich [the five colored flag] is [the five coloured flag] is [the five colored flag] a banner [the five colored flag] having five horizontal bands of red [Han], yellow [Manchu], blue [Mongol], white [Hui] and black [Tibet] with the Ming Sun and Moon symbol, a white circle with a smaller red circle in the left, [the Ming Sun and Moon symbol], representing [the Ming Sun and Moon symbol] an eclipse, [the Ming Sun and Moon symbol] in the middle [of the modified five coloured flag] as its [the restored Great Ming State's] unofficial national flag. A modified version of the Kuomingtang's Blue Sky, White Sun, and a Wholly Red Earth flag becomes its [the restored Ming State's] naval flag, [the restored Great Ming State] replacing the Kuomintang's White Sun with a white-outer rayed, red inner-rayed yellow sun with the Chinese character for "Ming" in the middle of the yellow sun in tribute to the original Ming blue sky and red outer rayed yellow sun flag while the crossed 18-star iron blood flag of the Xinhai Revolution becomes the Chinese army flag. The Beiyang Government of the Republic of China's Twelve Symbols national emblem is [the twelve Symbols National Emblem] rechosen [the twelve Symbols national emblem] as the Chinese national emblem, albiet with two crossed 18-star iron blood flags behind the main insigna of the emblem as tribute to the Xinhai Revolution, and a plum blossom/Chinese plum seal akin to the Japanese imperial family's, the Imperial House of Great Yamato's/the Minamoto dynasty's Chrysanthemum seal is [the plum blossom seal] chosen [the plum blossom seal] as the reinstated Imperial House of Zhu's seal while the peony remains the Chinese national flower. The restored Great Ming State also has the first incarnation of the Empire of China's national anthem, "China heroically stands in the Universe", as its [the restored Great Ming State's] national anthem. Yuan Shikai, Sun-Yat-Sen's intended heir Wang Jingwei and Mao Zedong are [Shikai, Jingwei and Zedong] considered to be the people [Shikai, Jingwei and Zedong] who [Shikai, Jingwei and Zedong] laid the foundation for the restoration of the Ming in China. The restored Empire of China's restored Bicameral legislative branch consisting of a Senate and a House of Representatives, the National Assembly [the restored Empire's of China's restored National Assembly] absorbs National China's unicameral legislature, the Legistative Yuan into itself [the restored Empire's of China's restored National Assembly] with the KMT becoming a part of the political coalition governing the restored Empire of China, Nationalist China's combined land, air and sea combat force, the Republic of China Armed Forces/Chinese National Armed Forces absorbs the still-existing PLA into itself [the ROCAF] and [the ROCAF] becoming a restored version of the Beiyang Government's of the Republic of China's armed wing and the Beiyang Government-ruled first Republic of China's combined ground combat, naval warfare and aerial warfare branch, the Beiyang Army and from November 1928, the National Pacification Army [the ROCAF absorbing the still existing PLA into itself |the ROCAF| and |the ROCAF| subsequently becoming a restored Beiyang Army/National Pacification Army], the PLA's special operation force with an intended rapid-response units in the event of a limited regional war under high-tech conditions, also carrying out Special Operations, counter-terrorism, and intelligence gathering operations both inside and outside of China, the People's Liberation Army Special Operations Forces, [the PLASOF] being [the PLASOF] absorbed [the PLASOF] into the ROCAF's elite special forces unit tasked with carring out special operations, including decaptation strikes in the events of a war, the Airborne Special Service Company, [the PLASOF being |the PLASOF| absorbed |the PLASOF| into the ASSC] the Nationalist Chinese National Police Agency which [the NPA] falls under the Nationalist Chinese Ministry of the Interior and [the NPA] oversees all all police forces within Nationalist China on a national level, [the NPA] absorbs the still-existing civilian police of the now-long dissolved PRC, the People's Police into itself [the NPA], [the NPA absorbing the People's Police into itself |the NPA|] and the Chinese People's Armed Police being [the Chinese People's Armed Police] absorbed [the Chinese People's Armed Police] into the National Police Agency's specialist unit and highly trained police tactical unit conducting high-risk arrests and other dangerous law enforcement duties, the Thunder Squad. Yuan Shikai's descendants are [Yuan Shikai's descendants] absorbed [Yuan Shikai's descendants] into the reenthroned Imperial House of Zhu via concubine, polygamy and adoption as a means of forming a unified post 1644 Chinese imperial house and also to prevent any succession claims. The pre-Genghis Khan-descended Mongolian Imperial House of Borjigin-ruled Great Mongol Nation/"Mongol Empire" and its [the Great Mongol Nation's] successor state ruling over much of Siberia, parts of Central Asia, Inner and Outer Manchuria, Han China, Guangdong, Guangxi, Yunnan, East Turkestan and Tibet from Greater Mongolia, the Genghis Khan-descended Mongolian Imperial House of Borjigin-ruled Great Yuan Empire/Great Yuan State/Yuan dynasty, [the pre-Mongol Empire and pre-Yuan dynasty] and the pre-Manchu Imperial House of Aisin-Gioro-ruled Manchu-dominated Great Qing Empire/Empire of the Great Qing ruling over Han China, Greater Mongolia, Tuva Guangdong, Guangxi, Yunnan, East Turkestan and Tibet from Inner and Outer Manchuria, Ming era [the pre-Mongol Empire, pre-Great Yuan, and pre-Qing] Han Chinese aristocracy, monarchy and nobility is [the pre-Yuan Mongol Empire, pre-Great Yuan, and pre-Qing Han Chinese aristocracy, monarchy and nobility] subsequently restored, restructured, readjusted and modified for the modern world of the late 20th century, [the pre-Yuan Mongol Empire, pre-Great Yuan, and pre-Qing Han Chinese aristocracy, monarchy and nobility] being [the pre-Yuan Mongol Empire, pre-Great Yuan, and pre-Qing Han Chinese aristocracy, monarchy and nobility] merged with the system of peerage Yuan Shikai had [Yuan Shikai] created when he [Yuan Shikai] formed the Empire of China in 1915. Japan also [Japan] restores its [Japan's] pre-WW2 and [Japan's] WW2-era imperial era protectorates of the Qing Imperial family, the Manchu House of Aisin-Gioro-ruled Empire of Manchukuo in Manchuria and the Genghis Khan-descended Imperial House of Borjigin-ruled Mongolian Autonomous Federation in Inner Mongolia's Chahar and Suiyan regions. This restored Empire of China is [the Zhu-ruled restored Empire of China] a provisional authoritarian absolute imperial unitary royal monarchy under acombination of military dictatorship and semi-totalitarian party coalition from 1981-1985, and then a constitutional parliamentary democratic absolute federalist unitary Imperial Royal monarchy with free and fair, democratic multiparty elections from 1986 onwards, [the restored Empire of China] being known as the Empire of China in both traditional Chinese and English onwards as well. The restored Empire of China is [the restored Empire of China] known as the Saudi Arabia of East Asia due to its [the restored Empire of China's] still-semi-authoritarian government and [the restored Empire of China's] adherence to Islamic government under Sharia Law along with its [the restored Empire of China's] vast oil wealth, with the restored Empire of Vietnam being compared to the Kingdom of Jordan, the restored Tang dynasty being compared to the pre-Saddam Kingdom of Iraq and the restored Daili Kingdom being compared to Qatar. The Imperial House of Zhu-ruled restored Empire of China has [the Imperial House of Zhu-ruled restored Empire of China's] an informal tributary status with Japan akin to the Beiyang Government-ruled First Republic of China's final incarnation as the WW2 era Japanese protectorate of the Reorganized Government of the Republic of China under Sun Yat Sen's protege and rightful heir, Wang Jingwei [Sun Yat Sen's protege and rightful heir]. The Reorganized Government is [the Reorganized Government] considered [the Reorganized Government] to [the Reorganized Government] be the predecessor state [the Reorganized Government] of the restored Empire of China. Sun Yat Sen is [Sun Yat Sen] still [Sun Yat Sen] honored as the father of the nation [the restored Empire of China] and his [Yat Sen's] three principles of the people, nationalism, democracy and socialism [social welfare], [Sun-Yat Sen's three principles of the people] play a key role in the government of the nation [the restored Empire of China], but its [the restored Empire of China's] real founders are considered to be Shikai, Jingwei and controversially Mao. Mao Zedong is [Mao] seen in both China and the rest of Asia the same way as Franco is seen in Spain and the rest of Europe: A brutal dictator [Mao and Franco] who [Mao and Franco] fought against communist terrorists [the Spanish Republicans and the KMT] backed [the Spanish Republicans and the KMT] by both the Americans and the Soviets but whose [Franco's and Mao's] actions lead to the restoration of the monarchy [the Bourbon-ruled Kingdom of Spain and the Zhu-ruled Great Ming Empire] after his [Franco's and Mao's] death.

Staying and continuing with the alternate history scenario prompted and generated in the previous entries, remembering to stick to the history book format: Why and how were Taiwan and the Pengu Islands returned [Taiwan and the Pengu Islands] to Japan after Chiang's death as the restored Japanese province of Formosa and how was the US able to maintain Nationalist China's status as a government of exile after the return of Taiwan and the Pengu Islands to Japan long enough to [the US] merge it [Nationalist China] with the PRC after Mao's death?

Staying and continuing with the alternate history scenario prompted and generated in the previous entries, remembering to stick to the history book format: How did the return of Taiwan and the Pengu Islands to Japan after Chiang's death allow the Americans and the ROV in South Vietnam to consolidate the military victory they [the ROV and the Americans] had [the ROV and the Americans] gained [the ROV and the Americans] in the Tet Offensive and [the ROV and the Americans] unify Vietnam under the ROV in 1975, with the PRC's combined ground, aerial, land, and naval combat forces, the People's Liberation Army, the PRC's bodyguard unit for elite CCP members + domestic secret police agency, the Ministry of State Security, and the paramilitary organization of the PRC's government primarily responsible for internal security, riot control, counter-terrorism, disaster response, law enforcement and maritime rights protection, the People's Armed Police, [the PLA, MSS and PAP] slaughtering a massive amount of Viet Cong militants at the Cantonia [Guangdong and Guangxi]-Northern Vietnam border in order to help out the PRC's American and South Korean allies against their [the PRC's and America's] shared Soviet enemy?

Staying and continuing with the alternate history scenario prompted and generated in the previous entries, remembering to stick to the history book format: Why did the Vietnamese nationalist, anti-communist, adhering to Dr. Sun Yat Sen's three principles of the people: democracy, nationalism and socialism [social welfare] political organization and militant group, the Nationalist Party of Greater Vietnam remains strong in post-Vietnam War united Vietnam under the rule of the ROV and why did the Americans choose to restore the Empire of Vietnam as the government [the Empire of Vietnam] of a united post-Vietnam War Vietnam under the Republic of Vietnam in South Vietnam with the Nationalist Party of Greater Vietnam playing a great role in the political and government structure of the restored Empire of Vietnam?

Staying and continuing with the alternate history scenario prompted and generated in the previous entries, remembering to stick to the history book format: Why did the Americans allow the Vietnamese to keep the huge amount of weapons left behind by the Americans, South Korea and the PRC in South Vietnam and the Soviets in Northern Vietnam along with the vast amount of military and civilian industry built up by the Americans through the Republic of Vietnam in South Vietnam, which played a key role in Vietnam's reconstruction and development under the restored monarchy [the Imperial House of Ngyuen and the Empire of Vietnam] after the war?