What are political changes of the Columbian Exchange and why did they occur?

What is the source dotheboys hall “it still tastes awful” about? (gcse history)

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?

The ancient greek city-state of sparta was run as an oligarchy , meaning