Not true.
Wars have raged all over the world. And are still smoldering. It’s just that we Americans only hear and see what concerns only US.

Bosnia, Kashmir, Palestine as in Israelis systematically killing off Palestinians and usa protecting its darling, African warlords, genocides, Syria, Afghanistan, Iraq, Yemen, most of middle east destabilized by US. We We interfere like lords of the universe and meddle in foreign affairs. Who the hell made us God? The mighty $$$?
Lifetime of peace in Europe perhaps, rest of the world has been so screwed by America, Russia and China.