20002009

20002009 refers to the years 2000 through 2009, the first decade of the 21st century. In data labeling and historical overviews, the string is sometimes used as a compact descriptor for this period, though the era is more commonly referred to as the 2000s.

The decade began in the wake of the dot-com bubble and saw rapid growth in information technology and digital connectivity. It was shaped by major geopolitical events, notably the September 11, 2001 attacks and the subsequent U.S.-led wars in Afghanistan and Iraq, which influenced international security and alliances for years. Global economies experienced expansion in the mid-2000s, followed by a severe downturn during the global financial crisis of 2007–2008.

Technological and scientific developments defined much of the period. The internet became widely accessible through broadband, and social media platforms emerged: Facebook launched in 2004, YouTube in 2005, and Twitter in 2006. The mobile revolution accelerated with the introduction of the iPhone in 2007 and the Android platform in 2008. In science, the Human Genome Project announced its completion in 2003, and Mars rovers Spirit and Opportunity conducted long-running exploration missions in the mid-2000s.

Economically, the decade bridged expansion and crisis, with stock markets and financial systems experiencing dramatic volatility and reform responses in the aftermath. Culturally, the period saw increasing globalization and a shift toward digital media consumption, setting the stage for subsequent years of rapid technological and social change. The year 2009 closed the decade with new political leadership in many countries and ongoing debates over recovery, regulation, and climate policy, including the Copenhagen talks.