a kriss blade with all its complete component must had started by a civilization then spreaded out..couldnt be different civilization different place made the same thing including ITS DETAILS(gonjo, grenengan, kembang kacang etc) at the same time....terms etymology also could help a bit for that matter..if it just a curvy blade anyone just could happend made the same thing at the same time around the world....even katana shape is actually pretty basic...thats why japanese cant submit its originality to UNESCO....if it s only about different scabbard or handle..okay...still we have to appreciate people creation...or anybody in the world just can make their own style for anything without mentioning it root/inspiration then called it their own or completely created by themself, emerged from themself without outside influence...