Some argued that if the united states failed to expand its economy overseas select one:

a. the nation would be taken over by more powerful nations.

b. the united states would no longer have a frontier of its own for expansion.

c. the united states would decline just like the roman empire.

d. all of the above

the united states would decline just as the Roman empire

monarchy doesn’t have to have the hereditary element. there have been elective monarchies in the past where you choose your king-for-life and when he dies elect someone else for the job.

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.