who lost the last MODERN--WORLD war, 1939-1945 ?

You mean the one where Modernity (Big MO) warred with the World?

Big MO lost and lost badly.

 'Nature Bats Last' (and Nature bats long and deep) .

 And in 1945, out of the resulting wreckage crawled PostModernity, aka POMO or simply PO.

All of us alive today - all of us - have spent the majority of our lives  as 'PO folks' in the 65 years since 1945.

Our godparents ?

Some folks called Adorno and Horkheimer.

Forget the claim that modernist claim that 1945 means E=MC2.

Time has revealed that 1945's actual formula to be this:

WWII=MOgoesPO