Describe how recent developments in the 21st century have changed the u. s. economy?

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?

Who was one of the greatest playwrights in the world , composing such classics ans macbeth, romeo and juliet, and henry v a. william shakespeare b. francis drake c. sir walter raleigh d. edmund spenser

Which did president carter refuse to do in his attempt to free american hostages taken by iran?