Why did John dunbar choose the post he did

No copying 15pts describe the belief in purgatory and explain the reason for the sale of indulgences.

Ineed the answer ! what year was the 13th amendment passed in the us?

Idon't really understand the question. it counts for 20% of my lesson grade and i really need putting the answer into words. anything will . i need asap so im awarding 30 points. a disagreement between states of the united states concerning the rights of states vs. the authority of the national government led to the civil war. state governments were forced by war into a subservient position. what might happen if national governments ceded their authority to a world government by international treaty?