I am not so sure about 'lots of people' died causation. Eg I don't think we'll see a babyboom after the war in Ukraine ends. And just look at the interwar yea

I am not so sure about 'lots of people' died causation. Eg I don't think we'll see a babyboom after the war in Ukraine ends. And just look at the interwar years themselves: lots and lots of people died in World War I, but that didn't trigger a babyboom. Just the opposite.