Of two electronic music groups, The Prodigy or Front 242, which group gained popularity earlier?
The Prodigy:  Along with The Chemical Brothers, Fatboy Slim, and other acts, The Prodigy have been credited as pioneers of the big beat genre, which achieved mainstream popularity in the 1990s. Front 242: Front 242 is a Belgian electronic music group that came into prominence during the 1980s.
Front 242