During that time (WWII), Navajo Code and coders were an important necesity because they were people that helped with communication. Back then, Navajo coders were the only ones that knew this secret language and utilized it in order to inform others and their allies secretly.
In 1942, 29 Navajo men joined the U.S. Marines and developed an unbreakable code that would be used across the Pacific during World War II. They were the Navajo Code Talkers.
The Navajo Code Talkers participated in all assaults the U.S. Marines led in the Pacific from 1942 to 1945, including Guadalcanal, Tarawa, Peleliu and Iwo Jima. The Code Talkers conveyed messages by telephone and radio in their native language, a code that was never broken by the Japanese.
You could talk about it's past and/or it's ancient civilizations. You could also possibly compare it's old civilization to it's current one, talk about the changes.
