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.
Monopolies.
The Sherman Antritrust Act of 1890 sought to <span>control business monopolies that conspired to restrain US trade. </span>
Black Soldiers rushed to enlist now that they were free from slavery
