Because if you have a industrial and agricultural surplus then ultimately the demand for goods would drop as well as the price of that surplus
His message in Mecca was not received well. He was being persecuted and mocked. He sought refuge in The Green Dome of Medina where he sought refuge and continued to spread the word of Islam becoming powerful and spreading Islam a d the word of Allah.
I believe the answer is: C. Law enforcement officers are mainly required to uphold the law.
Because of this the scope of action which can and cannot be done by law enforcement is limited in a very strict regulation. If the law enforcement disobey this limitation, the suspect could even sue the law enforcement and all of the charge can be nullified.
Building through the Sierra Nevada Mountains was very difficult and dangerous. Temperatures were freezing during the winter and in one year alone there were 44 storms.There was the great danger of an avalanche for the men working through 18 feet of snow and camping on the tunnels beneath it. Creating tunnels through the mountains required blasting with nitroglycerin. Advancing at one foot of mountain at a time, a total of 11 tunnels was created.