which political ideologies helped nationalism develop in many European states by the nineteenth century

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?

Think local—how is the lawmaking process at a local level different from the state or federal government? use complete sentences.

What does it mean to say the united states has a federal system of government