Highlighted below is a list of each tile matched with the category in which it fits best:
Dictatorship - Autocracy
A few people have power - Oligarchy
One person has power - Autocracy
Theocracy - Oligarchy
Communism - Oligarchy
Monarchy - Autocracy
D. New uses for medicine were discovered.
It would be the Delegated powers.
I hope this helps.
North Vietnamese troops would be allowed to stay in South Vietnam.