What events happened in the decade 2000?

The 2000s were marked by significant global events, including the September 11 attacks in 2001, which led to widespread security changes and the U.S.-led invasions of Afghanistan and Iraq. The decade also witnessed the rise of social media, with platforms like Facebook and YouTube launching, transforming communication and entertainment. Additionally, the global financial crisis of 2007-2008 caused severe economic downturns worldwide. Environmental concerns grew, highlighted by events like Hurricane Katrina in 2005 and international discussions on climate change.