RamscoopRaider
Donor
IMO you'd need a POD in the 40's or so, non specific but enough to get the butterflies working. Anyways my take for a revised TL
50's have an *Suez that results in the UK deciding to go with France rather that working on a special relationship with the US. US experiments with nuclear rockets begin earlier and get more funds
60's China pulls a Goa on Hong Kong and Macau, this leads both to greater US-UK tensions, the latter not happy the US did not want to stick its neck out for them, UK turns towards EEC, China becomes being seen as a greater boogeyman. With China seen as more aggressive the US is less eager to escalate in Vietnam, butterflying that war. US still makes a go for the moon, but decides on a nuclear fission upper stage, delaying the moon landing to next decade but getting a working fission rocket
70's Detente between the US and USSR, economic malaise in the US, with proto EU and Japanese imports being blamed for job losses. Soviets' build their own fission rockets, having that level of space lift available sees greater exploration of space. Generally see nuclear programs in minor countries go forward faster than OTL. China remains firmly Maoist rather than reforming. First arms control treaties seen as the beginning steps to the Codominium
80's Afghanistan is butterflied, Detente continues. US asks for a Plaza accord equivalent, this is rebuffed, poisoning the well between US and its major allies while relations with the USSR are at an all time high. An incidence of nuclear terrorism occurs with a weapon taken from a minor country, does not happen in US or USSR but the two countries agree to a joint antiterorism task force with intel sharing, precursor to Codominium Intelligence service. Limited economic reforms in USSR. First nuclear pulse drive vessels built in orbit, Mars landing, exploration of Jovian moons
90's Soviet economy continues to liberalize, minor political liberalization, major trade pact between US and USSR, use their joint political influence to force most minor nations into fold, US economic malaise ends, economic trouble in western Europe and Japan due to market access issues leading from US/USSR treaties. Expansion of joint US/USSR intel service with first joint military units
2000's Functional end of Cold War. US/USSR begin forcing disarmament treaties on rest of world as well as restrictions on nuclear tech/research after a second nuclear terrorism incident. A joint US/USSR Gendarme is formed to monitor enforcement and serve as a functional replacement to UN peacekeepers. Breakup of EEC as German reunification is made contingent on leaving the EEC and joining the US/USSR trade bloc, most of EEC follows suit due to proto Codominium economic pressure
2004-2008 Experiments at CalTech provide basis for Alderson Drive and Langston field
2010's Official formation of Codominium as a supranational organization. Grand Senate formed as governing body, with the US and USSR controlling most seats but limited voting power included for "responsible states", international restrictions on arms research created. First interstellar probes
2020's Codominium Gendarme turned into Codominum armed forces after major intervention required in a Mexican civil war, economic malaise in both US and USSR. First economic fusion reactor
2030's Laser launch systems create reduction in space lift costs, first commercial asteroid mining, economic expansion in US and USSR, does not trickle down to masses. First interstellar flight. Restrictions in general research put into place after someone releases a gene tailored plague, CoDominium declares an end to international armed conflict on Earth
2040's First fusion drive ships, great survey finds numerous inhabitable planets, terraforming begins on many not so inhabitable ones. First "welfare islands" in the US
2050's First Great Exodus begins, new colonies begin being founded by major nationstates as prestige projects, US/USSR have largest and best. R&D essentially stops after increased regulations, CD intelligence begins active sabotage efforts
2060's Codominium fleet and Marines are founded to control the new colonies, French foreign legion used as nucleus for the latter as its institutional culture deemed most useful for isolated units on very long deployments. Economic inequality on Earth continues to grow, Codominum intel begins suppressing dissent in US and USSR
2070's drop in cost of fusion drive ships leads to Second Great Exodus, minor nations create colonies, along with various interest groups, these are smaller and less stable than the earlier ones in general. Codominium Marines begin being used to put down risings in US and USSR
2080's Bureau of Relocation founded and used to start shipping involuntary exiles off Earth en masse
2090's CoDominium intelligence begins massively meddling in US/USSR internal politics
2140's Codominium no longer functional due to disagreements between US and USSR, Fleet becomes de facto independent
2150's Last War, end of Codominium in nuclear fire
50's have an *Suez that results in the UK deciding to go with France rather that working on a special relationship with the US. US experiments with nuclear rockets begin earlier and get more funds
60's China pulls a Goa on Hong Kong and Macau, this leads both to greater US-UK tensions, the latter not happy the US did not want to stick its neck out for them, UK turns towards EEC, China becomes being seen as a greater boogeyman. With China seen as more aggressive the US is less eager to escalate in Vietnam, butterflying that war. US still makes a go for the moon, but decides on a nuclear fission upper stage, delaying the moon landing to next decade but getting a working fission rocket
70's Detente between the US and USSR, economic malaise in the US, with proto EU and Japanese imports being blamed for job losses. Soviets' build their own fission rockets, having that level of space lift available sees greater exploration of space. Generally see nuclear programs in minor countries go forward faster than OTL. China remains firmly Maoist rather than reforming. First arms control treaties seen as the beginning steps to the Codominium
80's Afghanistan is butterflied, Detente continues. US asks for a Plaza accord equivalent, this is rebuffed, poisoning the well between US and its major allies while relations with the USSR are at an all time high. An incidence of nuclear terrorism occurs with a weapon taken from a minor country, does not happen in US or USSR but the two countries agree to a joint antiterorism task force with intel sharing, precursor to Codominium Intelligence service. Limited economic reforms in USSR. First nuclear pulse drive vessels built in orbit, Mars landing, exploration of Jovian moons
90's Soviet economy continues to liberalize, minor political liberalization, major trade pact between US and USSR, use their joint political influence to force most minor nations into fold, US economic malaise ends, economic trouble in western Europe and Japan due to market access issues leading from US/USSR treaties. Expansion of joint US/USSR intel service with first joint military units
2000's Functional end of Cold War. US/USSR begin forcing disarmament treaties on rest of world as well as restrictions on nuclear tech/research after a second nuclear terrorism incident. A joint US/USSR Gendarme is formed to monitor enforcement and serve as a functional replacement to UN peacekeepers. Breakup of EEC as German reunification is made contingent on leaving the EEC and joining the US/USSR trade bloc, most of EEC follows suit due to proto Codominium economic pressure
2004-2008 Experiments at CalTech provide basis for Alderson Drive and Langston field
2010's Official formation of Codominium as a supranational organization. Grand Senate formed as governing body, with the US and USSR controlling most seats but limited voting power included for "responsible states", international restrictions on arms research created. First interstellar probes
2020's Codominium Gendarme turned into Codominum armed forces after major intervention required in a Mexican civil war, economic malaise in both US and USSR. First economic fusion reactor
2030's Laser launch systems create reduction in space lift costs, first commercial asteroid mining, economic expansion in US and USSR, does not trickle down to masses. First interstellar flight. Restrictions in general research put into place after someone releases a gene tailored plague, CoDominium declares an end to international armed conflict on Earth
2040's First fusion drive ships, great survey finds numerous inhabitable planets, terraforming begins on many not so inhabitable ones. First "welfare islands" in the US
2050's First Great Exodus begins, new colonies begin being founded by major nationstates as prestige projects, US/USSR have largest and best. R&D essentially stops after increased regulations, CD intelligence begins active sabotage efforts
2060's Codominium fleet and Marines are founded to control the new colonies, French foreign legion used as nucleus for the latter as its institutional culture deemed most useful for isolated units on very long deployments. Economic inequality on Earth continues to grow, Codominum intel begins suppressing dissent in US and USSR
2070's drop in cost of fusion drive ships leads to Second Great Exodus, minor nations create colonies, along with various interest groups, these are smaller and less stable than the earlier ones in general. Codominium Marines begin being used to put down risings in US and USSR
2080's Bureau of Relocation founded and used to start shipping involuntary exiles off Earth en masse
2090's CoDominium intelligence begins massively meddling in US/USSR internal politics
2140's Codominium no longer functional due to disagreements between US and USSR, Fleet becomes de facto independent
2150's Last War, end of Codominium in nuclear fire