Well no one did. Atleast if some one did, it was done by the people of Indus Valley.I totally disagree with the term that “Columbus” discovered America as well.India being an oldest civilization was already known to Greeks, Persians, Turks, Africans etc. Gujarati’s were known for their trades with South Africans of those times before Britishers could ever reach India & It was a Marwari who took one of the Britisher to India showing him the exact sea route.People call it “Vasco Da Gama” who discovered India. Really? He just managed to find out a sea route at times we were trading all over asia over sea. Its not fair to call it a discovery. Or maybe it could be just a discovery for themselves but not for the world already trading with India.Credit for discovering America is all given to Columbus for his infamous voyage but truth is that in ancient Indian scriptures there are mentions about the place which is exactly opposite to indian subcontinent on the planet earth.On the top of that, lot of Vedic sights are found in Brazil and Mexico. Should I say that Indians discovered Latin america then? No.Its all about not knowing and when they get it they feature it as a discovery.