The head of government under a parliamentary system is known as which of the selections below?

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?

Whose plan centered on keeping the federal budget balanced, instituting tax cuts, and developing public works projects?

What was a major failing of the united states government under the articles of confederation?