Populists believed that bankers, landowners, and political parties
were in constant conflict at the expense of important issues.
had taken over the Knights of Labor along with other labor unions.
supported collective action to achieve prosperity for all.
worked together to keep control of the US in the hands of the wealthy.

The answer is d. spain.

Protecting and assisting  u.s. citizens  living or traveling abroad; assisting u.s.  businesses  in the international marketplace; coordinating and providing support for international activities of other u.s. agencies (local, state, or federal government), official visits overseas and at home, and other diplomatic efforts.keeping the public informed about u.s. foreign policy and relations with other countries and providing feedback from the public to administration officials.providing  automobile registration  for non-diplomatic staff vehicles and the vehicles of diplomats of foreign countries having  diplomatic immunity  in the united states