Why is precedent so important to a common law system?

If you had been an american colonist, would you have supported the declaration of independence? why or why not?

The term "jim crow" is used to describe which of these? a) bans on hunting b) segregation of the races c) preventing women from voting d) creating more public schools

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group.no, this does not need to be reported since it is unrelated to participation in the study.no, this does not need to be reported because two weeks have passed.no, this does not need to be reported since the subject recovered.