The idea behind the "Melting pot" analogy is that while our ancestors may have spoken German or Irish or Congolese or Yiddish or Vietnamese or whatever, we've a

The idea behind the "Melting pot" analogy is that while our ancestors may have spoken German or Irish or Congolese or Yiddish or Vietnamese or whatever, we've all agglomerated now and come to form a single nation with a single shared language (whatever we may speak at home). The various ethnicities that make up India haven't been melted together to the same extent that American ethnicities have - thought my impression is that India has a fairly strong national identity anyways.