The answer is "D. They transported goods across desert regions."
Answer: In order to pay the striking workers the government simply printed more money. This flood of money led to hyperinflation as the more money was printed, the more prices rose. Prices ran out of control, for example a loaf of bread, which cost 250 marks in January 1923, had risen to 200,000 million marks in November 1923.
A short-term effect is that the mobilization of its economics helped to bring the United States out of the Great depression. The economy also boosted because of the movement of women into jobs that were dominated by men.
A long-term effect was the creation of the GI Bill towards the end of the war. And, it helped to change the status of women in American Society, which also helped to the push of Civil Rights.
Muhammad flight from Mecca to Yahtrib became know as the hijra and its marks the first year of the Islamic calendar.