In what two kinds of cases does the Supreme Court have original jurisdiction?

Which of these effects of mass production techniques used during 1920

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

What issue led to the split in the democratic-republican party in the late 1850s