Which ancient civilization first widely used zero?

Ancient India

Which Pixar film revolves around a carnival-prize stuffed rabbit and chick duo named Bunny and Ducky? Which pop star's real name is Robyn Fenty? Who performed the 2004 hit "Yeah!" with Lil Jon and Ludacris? In which Caribbean nation did Fulgencio Batista rule before being overthrown? Which chemical element's symbol is 'Zn'?