Which group of people on the great plains benefited most from the invention of barbed wire?
a. native americans
b. railroad workers
c. farmers
d. cowboys

1.) The group that benefited the most from barb wire was the farmers. The correct answer is D.

2.) A major challenge facing the builders of the transcontinental railroad was crossing the Sierra Nevada mountains. The correct answer is D.  

patriotism is when people have love and devotion for their country.

explanation:

the correct answer is ''the programs costs have risen dramatically in the recent past'' hope this !