American Indian money includes WAMPUM, a type of currency used by the Algonquian-speaking Native American tribes in the Northeastern United States and Canada. It was made from shells and was used for trading goods and services. The Rupee was a form of currency used by the Native American tribes of the Great Plains region. The INCA used a form of currency called the Quipu, which was made of knotted strings and used to record numerical information. The Ute tribe used a form of currency called the Taos, which was made of animal hides and used for trading goods and services. The Otoe tribe used a form of currency called the Wakanda, which was made of beads and used for trading goods and services.