Which of the following was true of the silk road? a. most traders traveled the entire distance of the silk road. b. plagues and diseases spread through the silk road. c. peoples did not have control over any part of the silk road. d. only traders were allowed to use the silk road for travel.

Why did the crew of the zong ship throw some captive africans overboard? a. there was not enough space in the ship. b. the captives’ deaths were covered by insurance. c. the ship did not have adequate food. d. the ship did not have sufficient crew to care for the sick captives. e. the african captives rebelled against the crew.

Which of the following elements is not typical of an advanced society? a. cities b. science c. industries d. and nomadic lifestyle

Why would the free rider problem prevent a private business from investing in the building of a city sidewalk?