Answer: Because they had never developed immunities to the disease
"The name code talkers is strongly associated with bilingual Navajo speakers specially recruited during World War II by the US Marine Corps to serve in their standard communications units of the Pacific theater. Code talking, however, was pioneered by the Cherokee and Choctaw peoples during World War I.
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They sent and received verbally encrypted messages over radio to and from the battlefield during World War 1.
A person's own idea or explanation about something. :)
In all of the wars in the Industrial Revolution, more than 70 million personnel, including 60 million Europeans, were mobilized in this large war and more than 15 million people were killed.
B the celebration of African American culture