What triggered the oil crisis of the 1970s?
a. an uncontrollable oil leak in the gulf of mexico
b. the closure of the alaska pipeline
c. the opec oil embargo
d. the overdependence of americans on cars

In a modern democracy all elected officials serve for a certain number of terms then must retire a high school sophomore and a senior citizen may vote at the polls together a united states senator votes on immigration law on behalf of your mother through indirect ballot all democracies have a two chamber system of representation united states citizens live in a direct democracy