Question The passage indicates that Saddlebreds are considered important by historians because these horses
provided an interesting leisure activithin Kentucky
have the longest history of documented pedigrees
aided the South in recuperating after the Civil War
were primarily carriage horses not show horses

I think the answer is (voters)

Explanation:

Initiative: a state or local process through which citizens can propose laws that voters decide on

Referendum: a general vote by a political electorate that has been sent to them for a direct vote; in some US states, a vote to repeal an existing law

Recall: procedure by which voters can remove an elected official from office through a direct vote