Which federal legislation improved transportation within the united states?

I do believe it's the federal aid highway act of 1956

:) Hope this helps!

In June of 1956, after several years of quarrels, the creation of the interstate highways was approved by "The Federal-Aid Highway Act" under President Dwight D. Eisenhower, the bill was also known as "The National Interstate and Defense Highways Act", which significantly improved transportation within the country; an effort to do away with traffic jams, unsafe roads and inefficient routes yet also allowing quick evacuations in case of emergencies; one of the largest public work schemes in USA's history.

Explanation:

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.