How has this expansive view to curb state rights that might interfere with constitutional rights? do you think that this makes the courts too powerful? why or why not?

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.

the answer to your question is c

the american civil war was not caused   by slavery but by economic factors.