I also suspect you'd probably have to eliminate WW2 and Nazi Germans as well.
Here's a goofball TL to consider, with a sort-of POD that Hitler never rises in Germany, coupled with rigid airships not falling out of the sky quite so much
1920s-1930's. Britain, Germany, USA all develop long distance commercial passenger and freight airship lines - coopting for several decades expansion of airplanes into that role. Most ships contain helium gas cells with large balloonets with valvable hydrogen within them to minimize risk of fire and and save on still fairly rare and expensive helium. USA does not exclude export of helium
1930's-40's USA, Britain, and Japan develop large rigid airship aircraft carrier fleets, primarily for scouting and ASW work - but with some offensive strike capacity as well. By 1940, the typical US Navy ZRCV contains some 15 million cubic feet of lifting gas and carries a compliment of 10 Dauntless-type dive bombers and 4-5 scout/fighters. Each navy has fewer conventional aircraft carriers than in OTL, and doctrine for their use is more limited and unsophisticated. Airship "merchant marines" form a major basis for troop deployment and resupply.
1941-44 Pacific War between USA and Japan. Airships serve well initially, but the relatively few conventional aircraft carriers begin to show their advantages as offensive weapons. Military use of airships declines as money goes into carriers and long-range planes. Airships remain the favored means of long range and heavy lift commercial air travel. During the same period nuclear research in Germany leads to first controlled chain reaction. Entire emphasis is on peaceful, commercial use.
1946, First commercial nuclear powerplant goes online outside of Berlin, and German Socialist government mounts a massive campaign touting the cleanliess and safety of the atom for peace. German scientists are aware of potential for a bomb, but do not pursue it. Pacifist German government led by Hugo Eckener disavows any military use of nuclear weapons. US, British, Japanese, and Soviet programs are far behind, so far so that the League of Nations (which in this TL the US joined in 1933) establishes the Atoms for Global Prosperty program, where Greman technology is licensed to other nations through and under the control of the League.
1947-52. Experiments with powering a variety of vehicles with "our little friend the Atom" are underway in Germany and Britain, with prototype nuclear powered ocean liners, trains, and airships tested. Airplanes, still smaller and somewhat less developed than in OTL are considered too small for such experiments. Eventually, it is determined that the greatest and most efficient advantage is provided by powering large rigid airships with a nuclear steam/electric powerplant housed within the center of the gas bag and powering a stern propeller and a series of steering propellors, creating an essentially unlimited enduance for these craft, which previosuly could never complare with ships in that regard.
Beause atomic weapons have not been developed and meaningful international controls are in place to forestall their development, nuclear power has no negative connotations. Even in 1955, when Irish terrorists set off a small bomb in the nuclear airship RNAS "Queen Mary" while it was over New York City, destroying the ship, killing hundreds and creating widespread nuclear contamination, this is just considered just one of the normal risks of progress, much like coal mine disasters, oil fires, and steam boiler explosions.
By 1980, virtually all of the commercial power for the entire earth is created by a series of huge League owned and operated fission power plants selling power to national and private power utilities throughout the world. Each huge plant incorporates its own "Vonbraun base", a rocket launching facility where nuclear waste is launched safely to the moon. International commerce is handled almost entirely by nuclear powered airships and surface vessels.
In this world, there are no pinko liberals protesting these ships because they are building and flying them. Even in 1988, when a waste vonbraun veers off course unexpectedly, its self-destruct fails, and it slams into Johannesburg, South Africa, scattering deadly waste over much of the city, no one objects. At least 12,000 people eventually die as a result of radiation poisoning, but while the vaunbraun program is suspended, no one other than right-wing anti-relativists attack nuclear power.
D) protesting the US military's deployment of nuclear airships as early as possible. POD post 1930.