WW2 was not a boon to production. Well it was for weapons, but most of Europe and good parts of Asia were destroyed with millions dead. The only country coming out of it in better shape was the US, which did not see bombing and had relatively low human losses(still horrible to be clear, but not even close to what others had).

Modern wars suck and any smart country will try to avoid them. Hence you see Russia being fucked over by the EU via Ukraine and China fucking the US via Iran. Obviously you need dumb leaders to walk into those traps into the first place.

Australia had a huge sustained boom from the late 1940s through to 1970s, which was also aided by the Korean war. The boom tapered off with the oil shocks and stagflation of the early-to-mid 1970s

The UK also had a boom, recovering from rationing into the 1950s they joined the global long boom until the 1970s but yes it was not as strong as other countries booms due to the damage and cost of the war

Harold Macmillan’s famous 1957 line “you’ve never had it so good” sums it up pretty well

Europe had a massive boom known as the golden age of capitalism, nfi what you are talking about

en.wikipedia.org/…/Post–World_War_II_economic_exp…

The United States, the Soviet Union, Australia and Western European and East Asian countries in particular experienced unusually high and sustained growth, together with full employment.

That was the time after WW2. Of cause the economy does a lot better, when you do not bomb out cities and kill millions. That could have happened earlier, without the war and everybody would have been better of.

Military spending, wealth redistribution, tax system changes and the Marshal Plan for rebuilding Europe are direct war results that caused the boom. Everything needed rebuilding and everyone wanted to work together, leading to economic agreements and the formation of the European Union. Everyone needed materials like steel for construction. The Korean War then seriously boosted countries like Japan and Australia again