Can someone help me that what is confederation

What was the effect of the supreme court’s ruling in citizens united v. federal election commission? a. it removed limitations on corporate funding of political broadcasts. b. it removed all limits on campaign contributions by interest groups. c. it prohibited corporations and businesses from contributing to political campaigns. d. it prohibited interest groups from contributing to individual candidates.

47. when must a driver show proof of financial responsibility? a. when requested by a police office b. to register a vehicle or renew its registration c. to obtain a drivers education certificate d. both a and b

In which system of gonvernment would states function independently of each other?