Part 2
After the defeat of Japan in September 1945, the victorious Americans and British Empire set about rebuilding the world, despite the paranoid Soviet Union and its naked hopes to spread communism being a problem. In absolutely no shape to really reclaim its colonies and facing a daunting reconstruction task, France chooses to remain part of the Empire after the war and is rewarded with the third-largest number of seats in the Imperial Parliament.
The post-war years see France's entry joined by numerous nations - Jamaica, the Bahamas, Trinidad and Tobago and the West Indies from the Americas, Rhodesia, East Africa, South-West Africa and Somalia from Africa join by 1954. India's push for a secular state results in massive civil violence in the late 1940s, but the separatist movements are defeated by 1955, while the ideas of apartheid first created by hard-line Afrikaners in South Africa and Ketuanan Melayu by the UNMO in Malaysia both get quickly denounced by the Imperial Parliament and multiple battles between these groups and the governments both in their respective capitals and in London result in their defeat. Universal suffrage is reality across India and the White Dominions aside from South Africa by 1960 (South Africa catches up in 1964) and across the Caribbean by 1965 and in the Asian portions of the Empire by 1968. Intermittent battles between Jews and Arabs in Palestine causes another round of bitter battles in 1947-49, but this one is solved by huge deployments of Imperial troops and a power-sharing system of government which also results in Palestine having two separate Prime Ministers with equal powers.
Despite early troubles, massive educational efforts and economic development efforts are the order of the day, with efforts ranging from the small to the immense. The first nuclear power reactor in the Empire begins operation at Calder Hall in Britain in May 1949, beating Canada's Chalk River power station by mere weeks. Rural services are one of the biggest sources of efforts, while massive urban renewal in major cities is also a hallmark in many places. The fall of China to communism in 1949 sees Hong Kong rapidly grow into a massive commercial center, joining Singapore in this regard - indeed, both of them would be among the richest places in the Empire by the 1980s. Perhaps notable was that the baby boom of the White Dominions was joined into by many of the wealthier dominions, while in India it was the exact opposite, as India's birth rate dropped precipitously as the nation's wealth grew rapidly and its infant mortality dropped like a stone in the years after WWII. More notable was the decision in 1950 that any citizen of any of the Imperial Realms can travel to any of the others and live and conduct their affairs there without a visa, a move that resulted in vast population movements throughout the Empire starting in the 1950s.
Perhaps more than the social movements was the development of technology. Nuclear energy, jet propulsion, modern computers, sonar and radar technology, rocket programs, vast advancements in medicine, wireless broadcasting and communications, satellite technology, modern materials science and huge advancements in design all come out of corporations in the Empire, and not just in Britain itself - the Indians lead the way in the development of the wireless communication technology and many elements of medicine, while Britain and Canada run parallel nuclear programs and jet propulsion programs, as well as Canada's revolutionary DATAR sonar system for submarine hunting. India and Australia team up on many elements of agricultural science, while the vibrant colors and designs of African and Indian stylists soon are aped pretty much everywhere. The best companies of the Empire rapidly rise to prominence everywhere, and by the 1960s the vast developments of the great cities of the Empire proved to be visions of what was to come. London and Paris found themselves with one great rising rival after another for power and influence. Bombay (which become Mumbai in 1985), Kolkata, Toronto, Montreal, Vancouver, Sydney, Melbourne, Singapore, Hong Kong, Kuala Lumpur, Karachi, Tel Aviv, Cape Town, Zanzibar, Nairobi, Kingston, Lagos....one city after another was staking its claim to power and influence within the Empire, and few made poor cases for it.
Standards began to evolve out of desires to allow goods and services to be used abroad. Standards for everything from which side of the road cars drive on (Canada had switched to driving on the left in 1910s, most of the rest of the Empire already did so) to power transmission and plugs and sockets (240V, 60 Hz pretty much across the board) made sure that products used in many places could be used in other places, while other such big moves was in rail transport standards (Canada had the most efficient rail transport system in the Empire by the early 1950s, and as much of the Empire already used similar track gauges, their standards got expanded to other parts of the Empire) and vehicle sizes. By the early 1960s, the cultural aspects of the empire were also evolving, with the whole empire fighting for supremacy at football and rugby (even Canada, which had had far more interest in gridiron football than rugby, got good at football and rugby by the 1980s, and the ice hockey so loved in Canada found supporters in other parts of the Empire), and films, music, clothes and even mannerisms soon began to be seen in many places, including such amusing ones as traffic lights being referred to as 'robots', a trend that originally began in South Africa but became common across the Empire. The love of the outdoors that was so prevalent in South Africa, Australia and Canada swelled in many other places, and the cooking of various parts of the Empire spread across many parts of the rest of it.
Economic growth in the Empire at first didn't pay much attention to its less-than-desirable effects, but the Great Smog of 1952 and the Delhi Smog of 1954 made sure the Empire paid attention by teaching it hard lessons of why that needed to be done, though air pollution was only the first way the environment would be improved in many places. Canada quickly took from Britain the honor of being the best power engineers in the Empire, thanks to advanced hydroelectric power, the development of heavy-water nuclear reactors (which replaced the Magnox designs that Britain had pioneered) and the advancement of high-voltage direct current power transmission systems, all of which soon had marked effects on air pollution. Water pollution was also recognized a problem early on, and one of the world's first set of standards for water quality was enacted by India in 1962.
The Empire may have been focused on its own advancements, but that didn't leave them immune to the world around them. Communism's spread in many European colonies was a source of frustration particularly for France, which despite its membership in the Imperial Parliament tried hard to chart its own course for its colonies but frequently found the going difficult. The fall of China in 1949 to Mao saw General Chiang Kai-Shek move to Taiwan, and the bitter division in Korea led to the Korean War of 1950-52, while the North Koreans under Kim Il-Sung attacked South Korea, initially being more than a little successful until a massive counterattack by American and Empire forces as well as the Republic of Korea Army drove the Communists out, and a massive Chinese attack on the Allies saw the Allies, particularly the 5th Canadian and 1st Australian divisions (who took the brunt of the Chinese attack but managed to hold positions despite taking nearly 50% casualties in the process) have to fight for every inch. The success of clearing Korea of the communists stung Stalin, but after his death in 1953, the Communist world began to look inward, though the Cuban Missile Crisis of 1962 made for a real problem as the United States and Soviet Union stared each other down. Japan and the Empire formally restored ties with each other as independent nations in 1952 and restored their old alliance in 1962.
One result of the post-war era was the massive development of the new armed forces of the Empire. The development of the Vickers VC-7 and VC-10 jetliners in the 1950s and the building of a huge fleet of aerial refueling and transport aircraft out of these backed up the pair of V-bombers, the legendary Avro Vulcan and Handley-Page Victor, whose long legs combined with the refueling tankers gave the RAF a long reach. While the British worked on the large aircraft, India's spectacular HAL Tejas fighter and effective HAL Jaguar light attack aircraft proved to be as capable as any on Earth, while the Canadian Avro CF-105 Arrow proved to be the greatest interceptor of its time and ultimately had a long life in the RAF. The Royal Navy, after establishing its worldwide fleet bases after the war - Portsmouth, Devonport, Faslane and Rosyth in the UK were joined by Singapore, Sydney, Esquimault, Halifax, Simonstown, Garden Island, Akrotiri, Malta, Visakhapatnam, Karwar and Providenciales as the major bases for the Royal Navy - also established a growing carrier fleet, while steadily rejuvenating its fleet over the course of three decades after the war. The Empress class nuclear-powered supercarriers, first commissioned in 1964, would be the tool that retired the huge fleet of older carriers. The RN did, however, maintain a surface gun fleet longer than most - the last RN battleship, HMS Vanguard, was decommissioned in 1971 - and did maintain a massive fleet for both the purposes of amphibious assault operations.