9. which of the following factors contributed to the end of the open-range system? (1 point) an increase in the price of beef the invention of barbed wire the development of railroads the disappearance of big mining companies

Which of the following accurately describes the workforces of the united states and canada? a. most of the workforce in the united states and canada is employed in the service industry. b. most of the workforce in the united states and canada is employed in the educational field. c. most of the workforce in the united states and canada is employed in manufacturing and mining. d. most of the workforce in the united states and canada is employed in agriculture.