6) Black inventor whose refrigeration equipment for trucks paved the way for Americans to enjoy food from across the country.

a. Frederick Jones  b. Otis Boykin  c. Madame C. J. Walker  d. Norbert Rillieux  e. Joseph Lee  f. W. Lincoln Hawkins  g. Lloyd Augustus Hall  h. Garrett Morgan  i. David Crosthwait  j. Elijah McCoy