There is a role for the United Nations still as a Peacekeeper in today's world because they can't necessarily force a country to make or keep peace but they can go to a country with a smaller war going on and slowly make peace and as they progress with the small countries they can move onto the bigger countries to make peace.
D. (A paradox is a statement that contradicts itself which makes it D)
They must be collected at the same rate across the country
The Answer is Andrew Jackson
1. - Ballot
2. - Independent
3. - Communism
4. - Appointed.
Hope this helps.