Mexican citizens who were living in areas the United States acquired as part of the Mexican Cession

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?

Explain one example of how the u.s has struggles to balance energy independence and environmental

How did the united states surprise other delegates at the washington naval conference in 1921