What African-American invented various refrigeration systems for trucks, ships, and trains, which prevented food from spoiling, especially on long-haul trips?

a) Joseph A. Numero
b) David N. Crosthwait Jr.
c) Benjamin F. Jackson
d) Frederick M. Jones

Answer: d) Frederick M. Jones. He and Joseph A. Numero founded Thermo King. Jones also invented many other types of items, receiving over 60 patents in all.

Publication date: 12/24/2001