Why is the louisiana purchase treaty an important document in the study of manifest destiny? a) it provides an insightful history of new orleans before it joined the united states. b) it indicates just how prosperous the united states was becoming. c)it illustrates the relationship between the united states and france. d) it shows the extent to which the united states was claiming land westward.

Me! why was marbury v. madison such an important case? a. it confirmed that the supreme court was more powerful than congress but less powerful than the president b. it confirmed the authority of the supreme court to review a law in to determine whether or not that law is constitutional. c. it confirmed the authority of congress to increase or decrease the power of the supreme court. d. it gave the supreme court the power to confirm federal judges.