Originally posted by Nahuixtelotzin
Incans also sacrificed humans, although I know mainly of child sacrifices. IIRC,the Pawnee and probably other NA tribes too (notably some Pacific coast tribes) practized human sacrifices. The killing of enemy warriors was not rare many tribal cultures, including the plains. In South America furthermore the Tupinambá and also others, especially in the Amazon region, Carib tribes e.g.
The amount of those sacrifized was very diverse though and no one rivaled the Aztecs with their blood orgies, well, maybe the Teotihuacán culture, but we know too little about them to say.