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Was the 20th century the most tragic in human history?
What is the most important event of 20th century?
What will the 20th century be remembered for?
Key events of the 20th century. Following the 19th century, the 20th century changed the world in unprecedented ways. The World Wars sparked tension between countries and led to the creation of atomic bombs, the Cold War led to the Space Race and creation of space-based rockets, and the World Wide Web was created.
The 20th (twentieth) century began on 1 January 1901,  and ended on 31 December 2000.  It was the last century of the 2nd millennium. Unlike most century years, the year 2000 was a leap year, and the second century leap year in the Gregorian calendar after 1600 . The century had the first global-scale total wars between world powers ...
March 4: Woodrow Wilson is inaugurated as President of the United States. May 29: Igor Stravinsky 's The Rite of Spring infamously premiers in Paris. May 30: Treaty of London. June – August: Second Balkan War. August 10: Treaty of Bucharest. October 7: Ford Motor Company introduces the first moving assembly line.
7th millennium BC · 7000–6001 BC. 6th millennium BC · 6000–5001 BC. 5th millennium BC · 5000–4001 BC. 4th millennium BC · 4000–3001 BC. 40th century BC. 39th century BC. 38th century BC. 37th century BC. 36th century BC.
Dot-com bubble (2000–2002) (US) Turkish economic crisis (2001) September 11 Attacks (2001) Uruguay banking crisis (2002) Venezuelan general strike of 2002–03. Finance company collapses, 2006–2012 (New Zealand) Financial crisis of 2007–2008. Great Recession (worldwide) 2000s energy crisis (2003–2009) oil price bubble.