Question

Which innovation had the GREATEST impact on the availability of fresh beef on the US east coast by the end of the 19th century?
A) barbed wire
B) the telegraph
C) the steel plow
D) the refrigerated box car

Answer 1

The correct answer is D, "the refrigerated box car." This invention allowed beef to be transported long distances without spoiling.

Answer 2

The answer is D) the refrigerated box car