2010s: ITE Ruination

2000s: 9/11 Ruination

1990s: Ruinous economy, Trump in bankruptcy, the end of history, political correctness

1980s: Paul Volcker Ruining the world like the republican caucus of monetary policy.

1970s: Viet Nam killing boomers, the collapse of Bretton Woods, oil shocks, Ruination

1960s: Bay of pigs

1950s: Soviets get bomb

1940s: WWII Ruination

1930s: Great depression

1920s: Women Voting

(http://www.autoadmit.com/thread.php?thread_id=5726131&forum_id=2:#48938283)