Seated Navajo Men - Earth.com

In 1904, three Navajo men were photographed as they sat in a line. Based in Arizona, Utah, and New Mexico, they’re currently registered as the largest tribe in North America. Four hundred Navajo men served as code talkers during WWII, relaying important war messages in their native language, which wasn’t ever decoded by the Japanese. Photo Credit Buyenlarge/Getty Images

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