In 509 B.C.E. the Romans conquered and overthrew Etruscan conquerors who had ruled over them for hundreds of years. After that, the Romans established a republic government where the citizens elected their representatives to rule on their behalf.
With this republic government, the citizens gained many rights like the they could vote, marry, practice business and many other rights. Though the citizenship varied greatly and was divided into many types but overall the citizens had many rights and thus the common people had gained influence in the Roman republic.
The Neutrality Acts in general, which were passed in the 1930s, were passed as Europe was once again moving towards armed conflict. The US was a very isolationist country after World War I and wanted to make it clear to the world that they would not intervene.
States and the federal government have both exclusive powers and concurrent powers. There is an ongoing negotiation over the balance of power between the two levels.
The answer is C. stock market crash
