why is it that the years after WW1 were super chaotic with lots of wars and civil wars and conflicts and all of that, but the years after WW2 (at least in europe, less so in asia) were peaceful and stable?
Cause the effects were the polar opposite.WW1 aftermath saw the collapse of empires that had existed for hundreds of years (Habsburg, Ottomans, Tsarist Russia), and severely destabilized the empires that survived (Britain, Germany) which enabled their Irish and Polish subjects to also gain long-sought independence.WW2 aftermath was the opposite, it stabilized Europe by reverting back to pre-1939 normality but also under either extreme authoritarian government in the east or the overwhelming financial backing in the west that prevented economic and social stress.Also your question comes from a false premise because WW2 massively destabilized the rest of the world. Decolonization began immediately in Asia, and 3 years later all of Middle East was at war.
>>18654059America accepted its role as Western Hegemon, stabilizing Western Europe and blunting any Soviet intentions to intrude further. During WW1, a disinterested America and a dysfunctional France/UK were clearly insufficient in creating a more lasting Versailles based continental order.