Power kills and impoverishes life. Billions of people live without freedom, In the worst of these countries, they live in fear and insecurity. They are literally slaves, bought and sold, or the effective slaves of their governments. Expression is who you are you basically hiding your identity and holding your opinion against you.
Answer: A. Navajo Indians in the U.S. Marine Corps developed an unbreakable code using their native language.
Navajo is a language that is not written and is very complex with its incomprehensible syntax, tonal qualities and especially the dialects. That is the main reason that Navajo language was used to secure communications during the war.