Why were the Navajo so good at transmitting information secretly?

Code Talkers

Explanation:

A code talker was a person employed by the military during wartime to utilize a little-known language as a means of secret communication. The term is now usually associated with United States service members during the world wars who used their knowledge of Native American languages as a basis to transmit coded messages

donald carl johanson (born june 28, 1943) is an american paleoanthropologist. he is known for discovering – with yves coppens and maurice taieb – the fossil of a female hominin australopithecine known as "lucy" in the afar triangle region of hadar, ethiopia.

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