* Astronomy

Benjamin Banneker (November 9, 1731 - October 9, 1806) was a free African American scientist, surveyor, almanac author and farmer. Born in Baltimore County, Maryland to a free African-American woman and a former slave, Banneker had little formal education and was largely self-taught. He is known for being part of a group led by Major Andrew Ellicott that surveyed the borders of the original District of Columbia, the federal capital district of the United States. 
Banneker's knowledge of astronomy also helped him author a commercially successful series of almanacs.
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