The actions of muckrakers in the late 19th
century and early 2oth century resulted in
(1) supreme court decisions that expanded the
right to vote
(2) government regulation of unfair business
practices
(3) increases in the power of monopolies
(4) reduction of the president’s power to manage
the economy

The actions of muckrakers in the late 19th century and early 20th century resulted in 2. government regulation of unfair business practices. The term muckraker was applied to journalists and authors who, as print publications entered a mass scale in the United States, brought light to overlooked and corrupt practices. The name itself comes from raking muck, or rather cleaning up the gunk of society.