From a civil nuclear pact with the US to the 'Missile Man' becoming the President; from Vodafone India buying Hutchison's India assets to the govt bringing legislation to 'retro tax' the mega deal; from the country's best annual economic growth figures to its worst market crash; from sending satellites to the moon and Mars to getting ravaged by terror and natural calamities; from citizens spilling on to the roads for safeguard of their rights to enactment of landmark laws like RTI, RTE and NREGA - India has seen it all in the first 15 years of this century. Business Standard looks at the most important events since the year 2001