What was the main benefit of the factory system? (5 points) a It cut costs and made workers more efficient. b It gave people their first chance to support themselves. c It reduced pollution caused by family-based power sources. d It increased the value of the workers and as a result, salaries rose.

Which of the following was not a criticism of the of new york city mayor's office of emergency management's command center? a. how close it was to a known terrorist target b. that it was on the 23rd floor c. its location was above an electrical relay station d. its lack of air, power and water supplies