when did the 21st century begin
The 21st century is the current century of the Anno Domini era or the Common Era, in accordance with the Gregorian calendar.It began on January 1, 2001, and will end on December 31, 2100. It is the first century of the 3rd millennium.It is distinct from the century known as the 2000s, which began on January 1, 2000 and will end December 31, 2099.n contemporary history, the 21st century began with the United States as the sole superpower in the absence of the Soviet Union, while China began its rise to becoming a superpower and the BRIC countries aim to create more balance in the global political and economic spectrum.