You've probably never heard of Gladys West, but without her, GPS would not look the way it does today. This woman was born on a sharecropping farm and made the decision early on not to live the rest of her life there. She worked so hard in school that she earned one of two scholarships to Virginia State University, a historically Black university. Once there, she was so good at everything that she almost couldn't decide what to do! But she chose math, because it was the most challenging thing she could think of, and the rest is, well, history. 

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