how did tribes communicate
Sign Language: Not all the Plains people spoke the same language. To communicate with other tribes, they developed a sign language, a language of hand movements.Over time, the same signs were used all over the Plains area. Usually, each band had at least one sign talker.The talkers understood over 3000 different signs.ign Language: Not all the Plains people spoke the same language. To communicate with other tribes, they developed a sign language, a language of hand movements.