You can copy as much as you want Just remember, the more you copy, the more you must rephrase the words.
Answer:
Dorothy Vaughan was an American computer programmer and mathematician who made significant contributions to the early U.S. space program. She was also the first Black American supervisor at NASA, a role she would continue to hold up to and beyond its merger with NASA.
Hope this is write I did a lot of reserch!
He toured the area before and after the dam was built.
