How are common law and precedent related?

Why were inventors essential or necessary for an industrial revolution to happen in america

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.

Who were the only people that were not allowed to be a citizen in the roman empire