If you consider the contribution the Choctaw made to help win WWI to be significant, then I would point to that. In World War 1, in order to confound German intelligence from deciphering communication a code was developed by using the Choctaw language to communicate plans and strategic information, the German were never able to make heads nor tails from it.
Yes the Choctaw were the original "Code Talkers" the same strategy was employed in WW2 but with a different Native American language.
It is a very interesting story about the Choctaw Code Talkers in WW1, here is a link to more on this:
http://choctawcodetalkersassociation.com/index.php?page=history
contributions of the modern family in the society?
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contributions of physics to society and national development
The Nobel board described the recipient's contributions as groundbreaking and transformative in their field, recognizing their significant impact on society and the advancement of knowledge.
There are so many contributions that Bill Gates is credited for in the society. He has made great contributions in science and technology through his company Microsoft.
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contributions of the modern family in the society?
Julius Caesar made many contributions to society. One of his contributions was the calendar with 365 days.
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His sexiness.
The Harlem Renaissance was significant because it gave African American people and other people of African descent, a new and improved status in the society. Because they made wonderful contributions of new kind of literature etc in the world.