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This event did not happen on January 1, 1939 however it did happen in 1939.
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This event did not happen on January 1, 1940 however this event did happen in the 1940s.
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This event did not happen specifically happen on July 1, 1941 but it did happen sometime in July 1941.
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Johnston has idea to use Navajo people to code messages. This event started sometime in December 1941 and not on the specific date December 1, 1941
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Johnston started to test Navajo’s if it is secure code and if US can use it in real conditions. This events started in early 1942 and not start January 1, 1942.
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This event did not happen on January 1, 1942 however it did happen on 1942
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FDR signs Executive order 9066.
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First 29 Navajo’s at the Marine base in California. This event happend sometime in May 1942 and not specifically on May 1, 1942.
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Preseident Roosevelt asks congress for declaration of war against Japan.
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Navajo people are fully used in many battles all over the pacific in few Marines divisions. This event did not specifically happen on January 1, 1943 however it did happend through out the year 1943.
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This event did not specifically happen on April 1, 1943 however it did happen in April 1943.
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Improving the code due to Japanese code breakers and new terms. This event did not happen on September 1, 1943 however this event happen in late 1943.
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This event did not specifically happen on January 1, 1944 however it did happen in January 1944.
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This event did not specificallyhappen September 1, 1944 however it did happen in September 1944.
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Between October 15 and Decmber 15 enterment camps started to shut down.