The Navajo language, known as Diné Bizaad, is a member of the Athabaskan language family. It is primarily spoken by the Navajo people, who are indigenous to the southwestern United States. The language is known for its complex grammar and rich vocabulary, which reflects the culture and traditions of the Navajo community. Navajo is one of the most widely spoken Native American languages, with tens of thousands of speakers. Efforts to preserve and promote the language include educational programs and resources, such as the Navajo Language Immersion School. The language also played a significant role during World War II, when Navajo code talkers used it to create an unbreakable code for military communications.