From 1820 to 1920 , which area saw the greatest number of people leave for the United States? A) south and east Asia
B) central and South America
C) northern and western Europe
D) southern and eastern Europe

the correct answer is d: "party organizers, volunteers, voters, and elected officials."

party organizers: individuals responsible for designing strategies in order to better execute the political campaign. this includes the candidate's public relations. volunteers: individuals responsible for raising awareness regarding the candidates running for office.voters: individuals who are convinced by volunteers that a particular candidate is the best option.elected officials: winning candidate and his elected team are a product of a successful political campaign.