An outbreak of a disease that spreads through a community of people (Ex. Europe, Johannesburg, Missouri), some examples would be The Black plague, Ebola, or The common cold/the flu
And I think you meant EPIDEMIC
The society's members. This is because the perspective of the functionalist lies mostly on the social consensus among the members of the society. With this, functionalists believe that the people are the ones who make the society through their own acts of making the society prosper.
They are completely different even on their views of certain things because they don't all think alike nor do their government act the same so states are republican some are democratic and other are liberals.
Where the leader of a country is the supreme authority on all issues, he is judge jury and executioner