Can someone me with questions 2 and 3

Hich explains why the constitution gave congress the power to create a system of federal courts? the constitution wanted congress to share power with the judicial branch. the constitution anticipated the need for courts lower than the supreme court. the constitution wanted congress to share power with the appellate courts. the constitution anticipated the need for courts equal to the supreme court.

4. choose one of the protagonists and explain how he advances the plot of his particularnarrative. how does the combination of his internal and external conflicts move the storyalong? who is the antagonist in the narrative?

How did imperialism play a role in sparking world war i?