I will give you an example.
WW1: earlier intervention of US will cause large casualties. WW1 is today accepted basically positive thanks to relative low losses USA suffered (compared to other nations involved from start).
butterflying US early ww1 intervention -> losses about 1 or 2 milion least, means stronger call for post-war isolationism (will not cause any population shortages as those would be replaced by immigration I belive, rather sociologic and political changes).
Generally strong isolationism could affect US - British relations pre December 41, meaning no or limited lend-lease program, and could even escalate in way that US, although supporting UK + USSR and joining war, turns all attention to Japan and Pacific theater.
Well in this scenario case, WW1 counts as lost morally and even further, ww2 will perhaps take longer and might end in some "Vaterland" scenario, I can imagine US and UK being allied block against continetal Germany post ww2
WW1: earlier intervention of US will cause large casualties. WW1 is today accepted basically positive thanks to relative low losses USA suffered (compared to other nations involved from start).
butterflying US early ww1 intervention -> losses about 1 or 2 milion least, means stronger call for post-war isolationism (will not cause any population shortages as those would be replaced by immigration I belive, rather sociologic and political changes).
Generally strong isolationism could affect US - British relations pre December 41, meaning no or limited lend-lease program, and could even escalate in way that US, although supporting UK + USSR and joining war, turns all attention to Japan and Pacific theater.
Well in this scenario case, WW1 counts as lost morally and even further, ww2 will perhaps take longer and might end in some "Vaterland" scenario, I can imagine US and UK being allied block against continetal Germany post ww2